This is the first in a series of articles for those of you who want to know a bit more about basic metal work, sometimes called fabrication. This is not complicated, no lost wax casting, bezel setting or soldering, just simple metal fabrication; but you can do a lot with simple techniques.
If you do choose to use soda cans for your source of aluminum you are going to need a fair amount depending on the size of the item to be cast. Make sure to crush the cans as much as possible before placing in the crucible or other area that will be used to melt the alloy.
A ceramic shell is placed around the copy. The shell isn’t really ceramic but a sand and liquid silica combination. You will repeat this step until the shell is thick enough for the piece. You will then heat the item which will melt the wax inside. The wax runs out of the shell through the paths placed during spruing.
The Lost Wax Casting process is the preferred method used when art casting. This process was used in ancient times to create bronze items. Small foundries like the type found in backyards, personnel workshops, and garages are able to use the Lost Wax Casting process with a certain amount of professionalism. Commercial foundries and professional art companies use the Lost Wax Casting process as well to create custom items and monuments. The process remains, essentially, the same since the ancient craftsmen who first pioneered the method. When used in commercial manufacturing or jewelry making, the Lost microfusioni a cera persa process is called Investment Casting.
To have an even bronze finish, we spray the statue or fountain with high-pressure powdered glass. We also apply a chemical called patina, which protects the bronze from corroding. Lastly, we apply a layer of heated wax, to ensure a radiant finish. After a final inspection, the bronze statue is ready for delivery!
It is made using different techniques, and can often represent the artist’s unique style. One of the traditional methods is to roll the silver out and then a rough shape, which will become the silver pendant, is cut out.
Thereafter the cut piece is pounded out with a mallet to flatten the silver and to temper it. Silver pieces are then pounded over some kind form, which would give the desired shape to pendant. Pounded silver gives a unique look because of the marks left by the mallet. Moreover it ensures that each piece is one of a kind, and no other silver pendant will be like yours.
Once the bronze has been poured and has cooled, the shell is then carefully chipped away, leaving a cast of the original sculpture in bronze. Any flaws are removed, the sculpture can be buffed and left its natural bronze color, or painted. This process is very labor intensive and expensive, but it results in such fine quality castings that it is still used after 4000 years.