Originally Posted by HillRider
Absolutely. Also, the heavy-duty disks just wear out, they don't shatter like the thinner ones if you aren't completely steady while using them. BTW, WEAR SAFETY GLASSES when doing anything with a Dremmel.
Couldn't agree more. I had one of the lighweight ones break on me last night--after I pulled it from the piece I was cutting (to let it cool). It flew straight at the center of the lense of my protective goggles.

If using the thinner ones, don't use while under the influence of caffeine