An RP part is used to create a master pattern.

• All shrinkage allowances of the wax & metal are in corporate into the CAD data.
• A silicone rubber mold is prepared using the RP master.
• Into this silicone rubber mold molten investment grade is poured. The wax patterns are later supplied to Investment casting foundry.
• In the foundry, a wax patterns are glued to a supporting structure to form a tree, which also serves as the pouring hole.

• The wax patterns are dipped in various layers of ceramic slurry ranging from fine to coarse. This provides a very strong external casing for the wax.
• The wax is burnt out in a dewaxing chamber & the shell is baked to a very temperature to give it a good strength.
• Finally desired molten metal is smelted & is poured into the ceramic shell.
• After the metal is cooled, the shell is broken down & the gate & flashes are trimmed off.
• The final casting if needed can be machined along the desired surfaces.