DrThunder88 912 Posted May 28, 2012 Report Share Posted May 28, 2012 I was converting my S-20 today when I decided to try my Dremel #115 HSS cylinder cutter to grind down the rivet heads instead of my usual mounted stone bit. Picture from Buy.com I had mistaken it for carbide, but it is actually HSS. Still, the thing ate through all three rivets faster than any abrasive point I've ever used. Unlike the abrasives, this bur didn't create any dust, only some fine, steel shavings. I checked the edges after the job, and it still looks good! Even running at top speed in my rotary tool has left it looking fine. It's a nice bit of kit if you're looking for a good rivet decapitator. Quote Link to post Share on other sites
vulcan16 971 Posted May 28, 2012 Report Share Posted May 28, 2012 I've used this one on at least a dozen conversions . Throws up some shavings but leaves the rivets smooth and intact where needed. Dremel 9903 Tungsten Carbide Cutter Quote Link to post Share on other sites
onehappycampster 25 Posted May 28, 2012 Report Share Posted May 28, 2012 Thanks for the tips, guys. I had loaned out my kit and forgot about that when I did my conversion. The only bits I had handy were some chainsaw sharpening bits. Man they were messy and they both broke by the end of it. Thanks again. Quote Link to post Share on other sites
patriot 7,197 Posted May 28, 2012 Report Share Posted May 28, 2012 How are they for bucking? When I built my AMD I was afraid the cutter bit would buck all over the place and tear my hand to shreds. Quote Link to post Share on other sites
DrThunder88 912 Posted May 29, 2012 Author Report Share Posted May 29, 2012 Not bad at all. At high speed, it bit into the steel without digging in. I don't think I had a single instance of it jumping off the rivet and cutting into something it shouldn't. Quote Link to post Share on other sites
gunfun 3,931 Posted May 29, 2012 Report Share Posted May 29, 2012 I haven't shaped steel with that, but I use the same bit for aluminum and plastic frequently. I've used it for wood too. With aluminum, the thing is to keep the RPMs maxed so as not to give it a chance to bite deep and clog up. It also reduces chatter and makes for smoother cuts. It is how I contoured my pistol grip, and did some shaping on the Ace adapter I made. We also used it to remove metal from a scope mount for Salt's Mosin Nagant. A real carbide die grinder is way better, and each of the jobs I listed would have been better with a band saw or belt sander, but it worked well enough. Quote Link to post Share on other sites
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