you need a hole saw for the drill to slide in the hole. Tighten with a screw. Base can be wooden. drill a straight hole into the base. Metal or wood rod. Metal rod from old printer.
I am so glad to see ya'll came out with one like the old Excalibur line, I always thought it was a great saw, but when I got ready for one, it had gone out of production.
I went and picked up some materials and built one in less than 2 hours. I am nice to myself. I was just reiterating what you said to me. Your video was the problem, not what i was doing. Your a terrible salesman. You better stay in the shop.