Is there a material you guys would suggest using on a weaker CNC to make molds for metal or glass?
However engineering wax is not cheap and cheap wax difficult because the half melted shavings stick to everything.
Can a CNC work porcelain for example?
I think it would break like glass.
Engraving it may work.
Marcus, I meant the glass or metal would be poured into the mold I would make.
So a directly machined mold…no idea.
Quote: “using on a weaker CNC”
Have a look at glass moulding plaster, I think it has silica in it. I’ve never tried to machine it when dry. Cuttlefish bone is also used for casting metal and glass and is machinable.
Also, you aught to be able to cut fired porcelain with the right bit/plunge rate/speed/rpm/dust removal, etc… It’s probably not what you want to do though. When it’s all said and done, lost wax will probably be your best bet. If you’re looking for a more easily repeatable method, you might consider cutting a plastic or aluminum mold that you use to your pour your lost wax molds.
Thanks, John Grant. The bricks are actually sort of what I was thinking of. I do not think my molds will be too complicated.