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Thanks Mike, .........I've also been thinking, that some use none-perforated flasks that sit on top of the casting machine (with an adapter plate with a small hole in the middle)....well why not make a big flask, larger than the diam of the vacuum caster, that sits above it (thinking flywheels). Mike
Jewellery makers sometimes add waxed cotton threads between the wax pattern and the vacuum face to improve the vacuum draw.
QuoteJewellery makers sometimes add waxed cotton threads between the wax pattern and the vacuum face to improve the vacuum draw.do you between the pattern and the bottom opening or the top? if the bottom, wouldn't that create a path for the metal out of the mold?