Dragonalain
Active VIP Member
Make sure you test on a scrap chunk of uhmw first. That stuff is nothing like wood to drill or work with. Even a countersink bit will grab and pull right through the sheet before you blink.
Yes that part is not on the bit yet. The top of the cutter needs to be flush with the uhmw. I’m just going to tack a washer on the bit to set the depth. As for test pieces I had some but left them at home. Tmw I may have time to test the cutter in uhmw.