11-21-2010, 02:54 PM
I've used these and they work great. Keep an eye on the center point when you're twisting it around. It will dig into the hole and make it bigger/distorted throwing the circle out of whack. On the thin styrene i was using a single pass was enough to bend and crack the sytrene on the score mark. Good luck !
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Sometimes I build and think and sometimes I just build.
Sometimes I build and think and sometimes I just build.