Today I tried to machine my tooling board for the first time. Absolutely amazing. Its so hard but machines like butter, and the surface texture is out of this world. Perfect for my plastic molds. The only question is if its durable enough to last for a hundred cycles or more. Time will tell.
Next its time to finish the injection molding machine and fill the mould with some plastic. But I probably need some release agent, and dont know if I should go with clear laquer or a special silicone oil I bought a few years ago for another project. Probably need to test them both on some scrap piece.