What do people use for testing and prototyping ?

[Musht]

Machinable wax, generally blue , holds very fine detail well, and can be used in lost wax casting

Trycut - the easy cutting machinable wax for CNC milling machines, lathes etc

Foam comes in many grades, Cellotex and 1/4" cutters from Toolstation, thanks Jonathan, are a cheap and available way of prototyping,

Meshcam test on logo into cellotex with 1/4" 5mm cutter, can`t be any harder on cutter than wood or MDF.


Celotex Cavity Wall Board 50mmx1200x450 - Polystyrene Insulation - Insulation -Building Materials - Wickes

at the other end of PUR foams, modelling and tooling board

Modelling | Resins Online

Then move into epoxy boards used by F1 teams and aerospace, priced for the target market....