Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

Metal Casters have the luxury of choosing between several casting methods to accomplish their goals. Often times the metal caster chooses one method and sticks with it for several years until need directs him to another. Of course, there are those adventurous few who like to sample each casting method to find the best fit. Sure, sand casting might be the most popular but what about Lost Foam or Investment?

What about Die casting?

Die casting is used by industrial foundries and manufacturers to create practically anything and everything, such as die cast cars. Many small foundries, like the one in your garage, backyard, of workshop may find that die casting is really just not economical. But who said that having fun and trying new things was ever economical? The process of Die Casting involves a simple concept. The molten metal is injected with high pressure into the mold or mold cavities. The mold used in die casting can have several small civilities of either the same pattern or different pattern.

The name Die Casting comes from the molds which are called dies. These molds are reusable and are often made from steel but other alloys can be used as long as they can withstand high pressure. The reason dies must be created from metal and not from sand or other material is due to the high amount of pressure used to get the molten metal into the mold. If sand molds were used in a Die casting procedure then the mold would crumble. There are plenty of advantages of using dies in a casting procedure which makes this method desirable for anyone wishing to create a high volume of similar castings.

Die Casting is perfect for anyone that needs to make a lot of the same thing without any quality or pattern deviation. This is especially helpful in certain industries where quantity and quality count. Many hobbyists may have no use for die casting on a practical basis but will often try at least one Die casting for the sake of trying.

There are two types of machines used in the Die Cast procedure. These machines are essentially the same and are called the Hot-chamber and the Cold-chamber.

The Hot-chamber machine melts the alloy and feeds it into a section of the machine referred to as the gooseneck. A piston then forces the alloy into the mold. A separate furnace is not needed but the draw back of this is that metals with higher melting points can not be used.

The Cold-chamber is used for metals that can not be used by the Hot-chamber such as aluminum and copper. A separate furnace is needed to melt the alloy which is then poured into the injection cylinder and then shot into the mold.

The advantages of using Die Casting vary but the most noticeable advantages are the repeated quality, smooth casting surface, and the quick production of casts. While the initial cost of Die Casting exceeds several of the other casting procedures, those that need a high number of casts in the shortest amount of time possibly will benefit greatly from the investment.

Die casting is commonly used to create commercial goods as it yields a high volume. The molds, or dies, used vary in life cycle depending upon the material used to create the die. The die can have one cavity or several cavities depending upon the need.

Everyone should try die casting at least once if they can afford the initial cost. Besides, who knows when you’ll need a small battalion of metal soldiers which can be made quickly and easily with die casting.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

Casting Wax is an ancient technique that has been used to create very complicated metal castings and involved pieces that would other wise be impossible either because of economic reasons or manufacturing reasons. Everyone from small jewelers to large industrial foundries can use Lost Wax Casting. This process is also called Investment Casting when it is used in commercial industries. While jewelry makers are the primary ones to use the Lost Wax Casting, many others use it to achieve a number aims and goals.

Lost Wax Casting is the ideal and preferred method for artists who are interested in making items like sculptures or rings from a variety of alloys like bronze, steel, or copper. This process is quite involved but not all that complex as long as you have some kind of metal casting know-how. For anyone wanting to experiment with different casting methods Lost Wax Casting is a great option because it involves a few materials and methods that are not normally found in other methods like Sand Casting.

The most noticeable difference of Lost Wax Casting from other castings is exactly what’s in the name; the wax. To use Lost Wax Casting you do not necessarily have to be an artists but some skill in sculpting might be nice. You are going to start off by creating a sculpture from wax that will be the original.

You will then create a mold of the original. The mold is usually created from plaster with latex lining to help preserve the details of the original. If this is your first attempt at Lost Wax Casting you may want to make an original without a lot of detail just to get the feel for the entire process and so you do not become discouraged if something does not work out. Remember metal casting is a skill that must be learned by research, trial, and error. Chances are that you will not be completely successful, the first time around. The original piece is usually lost after the construction of the mold. This is normal and if you do want to prevent this from happening you can create the original from material other then wax like a metal alloy.

When the mold is ready you are then going to pour molten wax, you’re not ready for metal just yet, into the mold. The amount of wax needed for this step depends on the desired thickness. Once the copy is ready, you are going to remove it very carefully from the mold. You will remove any of the impurities from the copy. This is called chasing.

You will then sprue the copy. Spruing is the act of carefully placing paths that will let the molten metal in and air out. Afterwards, a ceramic shell is created around the copy. The shell isn’t really ceramic but a combination of liquid silica and sand. Traditionally, and in some areas still, animal dung and dirt is used to create the shell. The choice of which shell material you want to use is up to you. The shell is hardened in the kiln and the wax melts out. If you want to reuse the wax then collect it during this step. Wax can be reused a number of times and if you are on a budget or are just trying out different designs and methods, collecting the wax is encouraged. Once the wax is gone and all that remains is the hollow shell you will want to run water through it to make sure there are no leaks. If there are then you will need to patch them before pouring the molten metal.

You are going to want to reheat the shell before pouring the metal to avoid shattering the shell. The shell is still on the sprue tree so pouring the metal is an easy process. When the metal has hardened, then break the shell carefully and remove the cast. Afterwards, it is up to you to finish the piece to your liking and preference.

The Lost Wax DIY Casting process is an enjoyable experience but it does use a few tools that you might need to purchase before hand, like the wax and spruing tree. At the very least, you might want to try Lost Wax Casting once or twice to get a feel for it. This way you have another casting process at your disposal.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

Many believe that Casting is just simply out of reach for small furnaces but this is not the case. While alloys like aluminum are more prevalent in home foundries. Artists and hobbyists have also used brass, bronze, and even iron to fulfill their Casting Iron needs.

Industrial foundries commonly use iron for a variety of items like cookware, like cast iron pans, and even bridges. Casting iron provides an easy and effective method of making such large structural pieces and even smaller pieces for around the home.

The most common furnace type used by home foundries is the cupola furnace. The cupola is a basic furnace type that does not need a crucible as it allows the caster to pour the molten metal directly from the furnace into a ladle which is then poured into the mold. Cupola furnaces resemble smoke stacks and can be home made for those with enough confidence and some mechanical know-how to attempt it. The fuels used to heat the metal in a cupola furnace depend on the caster’s resources and preference. Many will use propane and some will use coal. There are a select few that will use waste material such as old scraps of metal and the powder at the bottom of bags of barbecue coal to fuel the cupola. For iron many would recommend the use of propane, but there have been some casters that have succeeded with waste material. Don’t be afraid to experiment with different fuel types to find the perfect fit for your furnace and need.

Finding a source of iron can be difficult and a trip to the scrap yard might be in order. This is just one of the exciting ventures that metal casting can provide you. After you locate your iron you will need to prepare your mold. This is assuming you have a pattern in mind that you want to cast. If not, then go ahead and figure something out even if it’s a small piece in order to test your iron casting ability. Since sand casting is the most popular casting method you might want to use it for the iron casting especially if you are familiar with the method and not with iron.

After making the sand mold and placing the runner for the molten iron you will melt the metal. The melting point of iron is 2,800 degrees Fahrenheit or about 1538 degree Celsius. Since all metals melt at different temperatures don’t be impatient if iron takes longer to melt and don’t be surprised if it’s quicker.

When the molten iron is ready you are going to pour some into a ladle and the pour that into the sand mold. The sand mold is held in place by the cope and drag, which is the top and bottom part of the mold. The runners are in place in the mold to allow the molten iron a place to enter. When the iron is cool, remove the cast from the sand carefully and there you have a cast of iron.

As with all metal casts, you will need to follow the appropriate safety steps to avoid any accidents. Accidents with molten metal will always be very painful so make sure you wear gloves, jeans, boots, and a long sleeve shirt. You may also want a heavy duty leather apron and a pair of goggles.

Iron casting is a great way to create restoration items or pieces for around the home and even for artistic purposes.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

Casting is more than just an excuse to play with molten metal it is actually a great way to create art and complicated pieces of machinery or other items that would otherwise be nearly impossible to make. Metal Casting is really a great way to save money…while playing with molten metal.

The reason that Metal Casting has survived the test of time is a matter or efficiency. Some of the earliest casting examples have been found in China dating back thousands and thousands of years. In fact every major civilization from the Egyptians to the Romans practiced metal casting. This skill came back into vogue during the Renaissance and has continued to advance and evolve from there. While Sand Casting is the most popular casting process there are many, many more processes available to the backyard foundries.

Not everyone is going to be casting heavy pieces like engine parts or cast their own motorcycles. So for those that just want to make decorative pieces you will not be using the same casting process as these heavy duty casters. For artists creating small scale statues or embellishes and for hobbyists that need a decorative touch to their model plane or boat might want to consider using gravity casting for their needs.

Gravity Casting seems to be especially useful when dealing with aluminum and other light alloys. The basic idea behind this casting process is pretty much exactly what the name suggests. The metal is introduced into the mold by the force of gravity. Most other casting process either use natural pressure difference like the kind in certain sand casting procedures or they use forced pressure like in centrifugal casting to get the molten metal into the mold.

One of the most common uses for gravity casting is when permanent molds are going to be used. Also called a die, the permanent mold is really only economical for those planning on using the same mold numerous times and will need to keep the quality at a constant level. While some temporary molds can be repeatedly used the quality of the finished product will begin to suffer over time. With die molds the quality will remain the same. Die molds should be seen as an investment. Yes, they will be more costly then other molds; however they will outlast cheaper options for molds. With Permanent molds, they are created using cast iron, steel, and other metals.

Gravity casting is used for the permanent mold process with pleasing results. Gravity casting is usually used when the finished product is more visually based then structurally based which is why this method is a favorite of artists and even some jewelers. The loss of strength is due to the lack of pressure used in this process. For those that need the strength but still want to use gravity casting, more of the molten metal will need to be used which will increase the weight.

Relying on gravity will take patience, although it will be needed for larger products.

If you have never tried gravity casting then you should, because you just may be surprised by what such a simple thing like gravity can create. For the sake of humor, make an apple and see what happens.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

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The Do It Yourself movement is certainly not a new one. The term, DIY was popularized in the 1950s but the concept has been around for ages. The concept behind DIY is undertaking a variety of projects either home improvement, restoration, or arts and craft without the help of paid professionals.

Recently the DIY Casting movement has received a boost of popularity with the aid of the internet. Many are finding that DIY projects are easier to undertake with the help of instructional websites which provide step by step instructions and real advice from people who have actually accomplished the DIY process. Several of these sites provide ideas, photos, message boards, and a sense of community for Do It Yourselfers that was simply not available years ago.

DIY projects can include any number or projects and ideas. Certainly the most common projects include home improvement such as cabinetry or installing plumbing fixtures, but one of the oldest DIY projects has to be metal casting.

The DIY casting movement has been around ever since metal casting itself has been around, which is quite some time. Metal casting is the act of taking molten metal and shaping it with the use of molds into something new. Metal casting has been used in the ancient world for the use of making weapons, jewelry, and even religious icons. Today, DIY metal casting is used to create parts and items for use in a variety of hobbies and restoration projects. This includes home improvement items as well. Metal casting can be used to make door knobs, cabinet handles, and other such items. For hobbyists, small model parts and miniatures can be created. Even artists use metal casting for sculptures and jewelry creation.

Metal casting possesses the true spirit of Do It Yourself. Many metal casters are drawn to the skill because it provides a cheap alternative to purchasing items or having commercial foundries make custom items. Nearly everything used in metal casting can be made by the caster. The furnace, molds, tools, and many others are made by most casters.

Like other DIY projects, the Home Casting movement is being helped along my communities that are found online. These communities act as meeting grounds for casters to share and exchange knowledge and ideas, not to mention blueprints for furnaces and ingredients for casting materials.

Metal casting is the pinnacle of DIY projects as it involves the fabrication of items from metal. After creating a mold of the desired item the caster will melt down iron, brass, or aluminum in a furnace. The molten alloy is poured into the mold and allowed to cool. The cast is removed to reveal a copy of the original pattern. There are several casting methods so undertaking a DIY casting project can be very involved and addicting.

In the spirit of DIY, metal casters strive to make the best for the least. A great source for aluminum is soda cans and many casters gladly travel to scrap yards for iron or brass.

The DIY casting movement is really gaining steam as many realize how cheap and fun this alternative is.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

The most noticeable item in any DIY Casting is the furnace. This is no surprise really, because without the furnace the entire Casting operation would be nonexistent. The furnace can take really any size and form depending upon the need and budget of the metal caster. What really makes home metal casting furnaces really unique is how many of them come into creation.

Sure there are plenty of companies that will gladly sell furnaces for the hobby metal caster and while this can be a viable solution to your furnace needs many metal casters prefer another method.

Making your own furnace is not as far fetched as it may seem and if you already a Do It Yourselfer, chances are you will have the needed skills and tools in your workshop or garage already. There are a variety of reasons why people make their own furnaces. The most common reason is fulfilling a need.

Many hobbyist and metal workers find out, to their dismay, that the local commercial foundries can not make the needed part or if they do, they feel the need to charge an outrageous sum. Not to mention the fact that the traditional methods of metal casting is quickly becoming forgotten as the industry turns to electric furnaces. So many hobbyists find that constructing their own furnace is an absolute necessity and a great way to preserve a piece of craftsman history. The artisans who use metal casting to create sculptures and other pieces find that making their own furnace grants them a greater amount of control over the entire process. This is actually how many people get into metal casting to begin with.

Most likely, your first furnace is going to be a small and rather simple one. There is really no need to run before you can walk when it comes to something that will be using intense heat and melting iron which can be rather dangerous.

Home made furnaces have been constructed from coffee cans to trash cans or sheet metal welded together. While there are a few components that really should be bought like the retractor to line the furnace walls which should be resistant to high temperature for a prolonged period of time along with special connectors and regulators, most of the furnace can be created in your own home. You should be able to find most of the components that you can not make at hardware stores or plumbing supply stores for relatively cheap.

Along with the furnace parts you will also need to buy a crucible which will hold the metal as it melts along with the appropriate tools that you will use to handle the crucible. While you are at it you might as well buy all the safety equipment like gloves, protective eye wear, and leather shoes. There is other safety equipment that you will need depending on the type of work and the type of furnace you are going to make.

Most likely, your first furnace is going to be a simple cupola variation. The cupola furnace which is going to resemble a smoke stack is a simple design and is relatively easy to make for anyone with mild craft skill. This type of furnace will not require a crucible since you will be able to pour the molten metal from the furnace itself into a ladle that can then be poured into the mold.

DIY casting furnaces are a great way to connect yourself with your metal casting work giving you more control. While building the furnace can be complicated at first, once you delve into it you will find the experience enjoyable and fascinating.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

DIY Casting is an ancient technique that has a variety of applications and purposes. Civilizations from the dawn of time to present day have used metal working as a way of creating artistic, religious, and practical items. The process of metal casting involves melting metals at high temperatures and using molds to then shape the metal into new items. The furnaces used in metal casting helped pave the way for the Industrial Revolution, without which the course of history would be dramatically different. Metal casting is just one form of metal working that has seen a recent surge in popularity as resources are becoming more affordable and communities are springing up to share information, ideas, and projects.

Learn Casting requires specialized equipment, knowledge, and some creativity. While metal casting is used on an Industrial level as the process cuts cost and proves to be highly efficient, many individuals participate in metal casting as a hobby and in artistic endeavors. Many people are drawn to metal casting for one reason or another, although there seems to be two main motivations that stand out. The first motivation that brings hobbyists to practice metal casting is need; people may need to create items or parts for other ventures. Metal casting is a great way to build hard to find pieces for models, restoration projects, and even just small replacement parts needed for common household items. The second motivation for using metal casting is using it as a way to create sculptures or other artistic endeavors.

Whatever the reason, small scale metal casting is attractive because that it can be done right at home, either in the backyard or workshop. Individuals working in metal casting are able to create home made tools and equipment like furnaces and molds. Metal casting is only limited by the individual’s desire, so for those with the time and the need, virtually anything is possible.

The actual casting process in metal casting has several forms, the most popular being sand casting. Sand casting involves creating a mold from sand which can be created at home, and then pouring the liquid metal into the mold. Afterwards, the metal is allowed to air dry and the mold is removed. This type of casting proves to be the most economical, but other types of casting can provide fuller detail and higher quality results.

Since metal casting involves working with metal in its molten form, the process can be dangerous if undertaken by the reckless or ill informed. The melting points of several metals are well above 1,000 degrees Fahrenheit, or 530 degrees Celsius. It is vital that anyone wanting to work with metal casting take all the proper precautions. Safety advice can range from simple common sense such as “never look directly into a high powered flame” to more specific warnings such as “when molten metal contacts a nonporous surface with water it is liable to explode, splashing hot metal everywhere.” The use of appropriate safety gear such as gloves and goggles is necessary as well.

With time, dedication, and some know how, anyone can practice the craft of metal casting. Metal Casting is a very enjoyable and rewarding craft but it does require a certain amount of education to get started.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

DIY Casting provides the hobbyist with a great way to create personalized parts and pieces that may otherwise be unattainable or far too expensive. Casting is an ancient art that is still is use to this day by major industries to artists to those with backyard foundries. This skill is a valuable one that promises to provide the hobbyist with a rewarding past time. Most hobbyists begin their casting careers with a modest sized furnace to fit their most basic needs. Within a few months, the hobbyist might find that the furnace has grown and that they are casting at every chance that comes along. Don’t worry, this is completely natural.

To say that metal casting is addictive is an understatement. Metal casting provides a way for an idea to materialize through molten metal. This is perhaps one of the greatest parts of the entire metal casting process like seeing what was once just sketches solidify from liquid iron, or whatever metal is used. All the metal caster needs is an idea and red hot liquid metal.

The furnace is the pride and joy for the metal caster. Most will construct their own furnace tweaking the design here and there to better suit their needs. Many home foundries are based on home made furnaces and if constructed correctly can prove to be highly effective. The crucial part of the furnace is the furnace torch. The torch brings the heat, incredibly high heat, and without it that chunk of metal would just sit in the crucible and never see life as something new and exciting. Except as a paper weight; a very ugly paper weight.

When searching for an appropriate Casting Torches the hobbyist will need to take several things into consideration. The size of the furnace, and what metals you plan to use are chief among the considerations. Many casters will use a torch that uses propane gas as it provides enough pressure and heat to melt most metals. If the hobbyist plans to use natural gas like the kind that is provide in households they may find that the pressure is just not enough and the desired temperatures will not be reached. The same is true for Butane. While natural gas and Butane can be used, propane seems to yield the best results. Oxyacetylene torches are a favorite with many casters especially for casting iron.

Price is yet another consideration. While it may be possible to rig a casting furnace it is not always advisable. Torches can range in price from $40 to several hundreds of dollars depending upon the size, the use, and accessories.

Many jewelers are able to use small independent casting torches but when dealing with metal casting in furnaces you will need to use a torch that can be mounted and used in such a fashion. Many think that just because you need a furnace torch you are going to need a large furnace. This is simply not true. A small furnace and furnace torch can produce enough heat to melt aluminum, iron, and a number of other metals. One of the furnaces functions is to help the flame reach optimum temperature and in the case of Reverberatory Furnaces, a furnace torch is an absolute requirement.

Casting torches can be found in some hobby shops and in hardware stores. Several online shops also sell torches for the hobby metal caster. When buying a torch hobbyist should shop around in order to find the best deal. Always use caution when dealing with a furnace torch.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

In DIY Casting, the type of furnace you have at your foundry, or workshop determines a lot of the work you can or can not do. Many metal casters enjoy making their own furnaces and have done so quite successfully. The plans for home made furnaces are eagerly shared among the enthusiasts so finding blueprints and instructions should not be difficult. But before you rush off to find the blueprints you may want to take time to learn about the types of casting furnaces available to help determine which one will suit your needs. This is not saying that you should only have one furnace at any given time, but this way you will know what project will work best for which furnace.

Cupola

Cupola Furnae are among the most popular with backyard foundries. Many casters construct their own cupola which proves to be cost effective and highly efficient if done properly. Since cupola furnaces can achieve high melting temperatures they are primarily used for the melting of iron and bronze, though aluminum can also be melted when attention is paid to keeping the temperature low. The primary fuel source for cupola furnaces are coke using limestone for flux.

By not using a crucible, the Cupola furnace is able to melt the metal at a faster rate. While individual designs of these furnaces differ due to varying resources and design ideas, the basic component of a cupola furnace is the same. The cupola furnace must be elevated above the ground and installed with a drop bottom usually hinged, which will allow the excess metal, fuel source, and other waste to drop from the furnace. The tap hole and shaft which will allow the molten metal to flow from the furnace and into the ladle and air shafts are also required. A slag tap hole can be placed on the furnace usually in the back, higher then the tap hole, which will allow the slag to flow out easily.

With most small home foundries, the cupola furnaces are preferred over that of other furnaces for its high melting rates and for how easily the construction of such a furnace can be.

Reverberatory

The Reverberatory Furnaces are commonly found in industrial plants but there have been quite a number of home grown foundries that have used this furnace type with much success. The basic idea of a Reverbeatory Furnace is to use the heat reflecting off a surface, usually brick, to heat the metal, which is aluminum in most cases. This way, the metal does not come into contact with the fuel or the flame. This process is also used in Puddling Furnaces. The name Reverberatory and Puddling are often used interchangeably. By placing the metal in a shallow depression and then directing an intense flame over that depression and to the wall, the heat rebounds to melt the metal. Many casters will adjust the length of the flame since a longer path will mean that the heat will be more intense.

There are many designs for the reverberatory furnace, all of which will include exhaust ports and the rear of the furnace must be able to withstand the intense heat and be able to bounce it back into the chamber.

Bronze, aluminum, tin, and many other ores can be melted in a reverberatory furnace all depending on the construction of the actual furnace and the heat of the flame. This type of furnace has been around since at least the Middle Ages and was used primarily for bronze work.

Electric Arc

Electric Arc furnaces are normally used in Industrial foundries. Most hobby casters do not use these furnaces due to cost, space issues, and a general inconvenience. There are two forms of the electric arc furnace, the direct and indirect.

The direct arc has three electrodes which are used to heat metal by way of the arc. This creates an incredible amount of heat and so water jackets and other cooling devices will be needed for operation.

The indirect arc just uses one electrode and works in much the same way as the direct arc furnace.

Electric Induction

Electric Induction furnaces are becoming all the more popular with large industrial size foundries that enjoy the clean burning and efficiency of an electrical furnace. Copper coils surround the crucible with the metal inside which can reach extremely high temperature suitable for melting most metals.

Rotary

The Rotary style furnaces are hailed for their ease of use being fully or at the very least partially automatic. These furnaces tend to be harder to construct though there are resources and companies online that sell rotary furnace.

The different furnace types do affect the quality of the work being produced, so it is important to keep that in mind as you cast. With a little trial and error, you should find the perfect furnace to fit your needs so you can start building one of your very own.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

Posted on November 5, 2008 in Hobbies & Crafts by No Comments »

DIY Casting is a useful skill that has its roots in antiquity. Weapons and sculptures were traditionally created using this method but as the DIY movement gained momentum many modern day casters have found a use for metal casting to make plumbing fixtures, door knobs, and many other items. Today, small foundries can be found in many backyards, garages, and workshops.

In order to make a casting of metal, you will need a furnace capable of melting metal alloys at high temperatures. Usually, individual metal casters will construct their own furnace. There are companies that will sell small scale furnaces but they are often costly. The most common type of casting is called Sand Casting which uses sand or green sand to make the molds where the molten metal will be poured into to form the finished product. The mold is a handmade item placed in a flask which has two parts, a cope and drag. The mold is usually made of sand, but can also be created using other ingredients like latex or even metal. It is in the mold that you will set the pattern to form the mold cavity.

The mold cavity will be an impression of the pattern including the fine details which will then be filled with the molten alloy. Pattern casting is an art form in itself, really, but anyone can create a pattern even if you have no artistic skill what so ever. The pattern is an original which will be cast into metal. Common pattern castings include complex engine parts for models, replicas of Civil War era weapons, sculptures, and even jewelry.

The Casting Form can be made of any material like clay, wood, and wax. The pattern material really depends on a few factors like the casting method and the availability of the material. If you are able to carve wood then you can use this skill to make patterns. There are some casting methods that call for the patterns to be made of certain materials. An example of this is the Lost Wax Casting Method which will use wax as the pattern.

When creating the mold, you will place the original into the drag of the flask and place more molding material on top forming the cope. When the mold is dry you will carefully remove the pattern revealing an impression in the mold.

If you are creating your own pattern you will need to make it with Contraction allowances in mind. This contraction allowance will compensate for the shrinkage that occurs in many casting processes. In order to take out the pattern without disturbing the mold, draft allowances need to be considered as well. The pattern should have tapered edges to allow for easy removal.

Many who make their own patterns will add sprues, gates, and risers to the pattern so that when castled these items will already be in the mold. These devices will allow the molten metal to find its way into the mold cavity.

If you find it difficult to make your own patterns then you can pay for pattern making services; although many casters in the same situation will just learn how to make patterns to save money. Pattern casting is a valuable skill to have and can be learned rather easily.

Metal Casting Zone is the new website that is all about Metal Casting and building a Metal Casting Community of members. Right now there is a free offer for new members when you sign up you will recieve a free ebook on Metal Casting Basics. Visit Metal Casting Zone today to get your free ebook on Metal Casting.

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