Infinity Tools 1/4インチシャンク x 1/4インチ刃径 x 1インチ刃長 超硬ソリッド スパイラル フラッシュトリム ルータービット

The spiral cut on this bit leaves a much cleaner edge on plywood than straight flutes ever did. I trimmed a dozen shelves and there was zero tear-out. Solid carbide seems to hold its edge noticeably longer, too.

I've used this bit on a dozen oak panels now and the carbide edge still feels razor sharp—no burning, no tear-out on the end grain. The spiral flute pulls chips out so cleanly that I barely have to sand the trimmed edges.

The spiral cut on this bit leaves edges so clean I barely had to sand the plywood after trimming. It’s solid carbide so it’s holding its edge way longer than the HSS bits I used to burn through.