I'd like to cut some wooden discs, and was wondering if someone could help me find the best tool for my application. The three options I've been looking at so far are:
#1: Circle cutter bit for drill press . Several companies make these ranging in price from $10 to $100, and with a maximum outer diameter between 4 1/2" and 8 1/2". I've got an adequate drill press drill press with a good-sized motor, so this is a convenient option, but most of them seem to require a not-so-convenient pilot hole in the middle.
#2: Router jig. This is pretty simple - just an aluminum sheet with a mounting point for a plunge router and a peg you mount in the center. I've already got the plunge router, so making one of these could be quite cheap; however, a pilot hole is still required unless you can find another way to keep the apparatus centered.
#3: Dremel circle-cutting jig. Dremel makes a circle-cutting assembly that appears to be based around a suction cup - hence, no requirement for that pesky pilot hole. However, they don't work with cordless dremels, which means I'd have to buy another one.