I saw on line a guy in europe that had made his own lost wax molds to make small glow engines for line controlled fighting planes. In that competition they try to cut the ribbon off their opponents tail, needless to say sometimes they take more off and destroy the plane and engine. But he has CAD drawings of his engines for which he uses CNC to make the molds for the investment lost wax. I believe he now uses a harder wax and just CNC's some of the parts without using some molds. Yes I saw some of the wax printers and your right, I would need to when a lottery to buy one also.Not quite sure what you are asking , wax patterns can be printed for use in the lost wax process and there are some plastics that can be printed and burnt out in a similar way to lost wax , not sure how good they are as I only use wax.
Wax printers are still rather expensive and not for the average model maker , you could easily equip a workshop with lathe and mill for less than the cost of a low end wax printer , but I would have one if I won the lottery.
Alright Gary that's just what I need, thank you.