So I am curious where folks get materials to mill. I am very familiar with wood products, but not so much with plastics or metals.
Good place to start.
Very cool site many thanks!
Onlinemetals is another place, and Carbide 3D does have some materials:
Your local hobby shop and possibly local hardware store may have a display rack of metal from K&S Precision Metals:
and a hardware store will have lengths of various metal alloys — be sure to get one which will machine well, for aluminum, that would be 6061 here in the States:
Or, find a local metal supplier/scrap dealer — if you can find one which will let you sort through off-cuts you can get stuff at scrap prices.
For aluminum bar stock, I’ve been happy with fastmetals.com.