Review on 🔪 Chamfer Router Forming Cutter, 45 Degree Cutting Tool by Alejandro Raney

I'm doing some experimental projects with speaker arrays (for fun and understanding). For my current project, I create two different arrays of 36 speakers and compare the sound results. The speakers are back mounted on 3/4" thick plywood and I used these bushings to narrow the speaker holes at a 45 degree angle into a conical (flared) shape. After narrowing the first 36 holes, the Drill does not cut off and continues to cut well I will move on to the next template after testing the first.