box builders what brand...

[gsuchyta 10+ year member]

Pats express has japser jigs for cheap just make sure you get the one that allows you to cut big circles not the smaller one. You can make a router jig as well out of 1/4" mdf if you want to. Get good bits that will last you a while. I picked up 2 bits at a pawn shop for like $4. Get a roundover and flush trim bit and a regular bit