good tool, good design, not suitable for what i do. We bought this to cut holes in a high density polyethylene barrel for plants. I'm older and a little frail, but my 1/2" drill flew across the room - luckily no damage or injuries. My very healthy child tried it too. He thinks it's only suitable for drill presses. At least in hdpe it requires more than human power. (Eventually I used Rotozip with a barrel attachment - imperfect but manageable.)