I used this on the last bow , bocote riser, didn't plug up much and I bet if I ran it in reverse on some maple it would clean right out.
Its a tire repair tool for grinding before the patch. Think it was less than 5 bucks when I bought it several years back,wish I'd tried it sooner.
I put a carriage bolt in it with a washer and nut to hold it.
Run it slow or fast, no prob and it really shapes stuff. I imagine it would shape fingers too, so be careful if you try it! :D