The first seven or eight years I built Osage selfbows I used an 4 ½” grinder to do a lot of shaping, which created lots of dust. Even though I wore the cheap dust masks while working on bows, the dust would swell/clog up my sinuses and the eyes puffed up. Getting a band saw and dust collector alleviated most of my problems with osage, and other woods like Ipe. The dust collector is always going when using machinery, files, or anything else that makes dust, in the shop.