cheapest sheet materials for 3d milling

[Chaz]

Machine wax, here's one supplier, there are others, http://trycut.co.uk/
It's quite expensive but there's no waste as it just remelts back to a block.

Nice find. Might look at this too for 'stuff'.

[magicniner]

There are some recipes on line for home-brewed machinable wax, one involves Paraffin Wax, old carrier bags and an old deep fat fryer, must try it some time :D

[Chaz]

Was snooping around looking at the waxes and came across this.

http://www.collegeengineering.co.uk/...ials/testfoam/

[Edward]

I think these waxes and foams are a great idea to test out tool paths on a complex piece before risking it on the real thing. They are not cheap though...