IBM Process 11.swf
June 12th, 2012 | 
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Showing the basic IBM process and an 8 cavity roll-on mold at the end. Backed by 40+ experience in the manufacture of Injection Blow Molding Machines, Jomar Corporation has a range of 7 IBM machines from the M15 to the M175, producing bottles from 2ml to 4 litres, in single cavity to 24 cavity molds without scrap Markets supplied include Ocular, Medical, Pharmaceutical, Toiletry, Automobile, Baby care etc. Materials Include PP, HDPE, LDPE, PET, Barex, PS, SAN etc
We make many of our pieces using the lost wax casting method, a technique that has been in use for thousands of years. In this process an original model is made in metal or hard wax. A rubber mold is made of the carving and molten wax is injected into the mold to make a perfect wax replica. Several wax replicas are then arranged on a central wax core to make a tree which is then immersed in a plaster-like material. The hardened plaster casing is heated over a long period at high temperatures until the wax inside vaporizes. Whats left is a hollow mold into which molten silver or gold is poured. Once the metal cools, the mold is broken open to release the new metal pieces. Finishing the new pieces is a multistep process that produces a perfect copy of the original design.
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I’m looking through videos just to get an idea of how this was done in the beginning, thanks for the simple explanation! I can see how they might have done it in the days of yore with more basic tools than this, but even though this is in essence the same process, it looks a hell of a lot more efficient.
We use a robber sleeve which fits over the flask. Once the investment has hardened we remove the sleeve.
What do you use to hold the investment in the flask when using a flask with holes in the sides as used in your video?
Yes, its a lot less dramatic than most people think, except when something goes awry like a mold breaks or the bottom blows out of the melting furnace!
@1:07 That is one slick kiln! She poured that molten silver as easy as a cup of coffee!
We have been using silcone rubber molding compound for many years and it produces a very clean surface on the wax copy. It is used much like latex i.e. it is cured with heat and pressure. It is a little less fexibele than latex but that has little effect unless you are molding extremely complicated designs. In the US it can be pruchased from almost any jewelry supply house like, Rido Grande Albuquerque, Gessein or Contenti supply Co in Providence RI.
hi,
I had using polymer mold and latex mold. but when I withdraw wax the wax broke out in peices plz help what kind of material you are using in making mold , and furthet if you are using mold release. please help
from Bhupesh Handa (India)