Sarge 3,464 #26 Posted March 1, 2017 Be really careful using electricity to remove a bolt - if done absolutely correctly it works fine , if one little thing is out of place you'll end up fusion welding it in the hole.... For slotting smaller screws like the 10-24 and similar sizes , try using a nearly worn out fiber reinforced disk , or the HSS slotting saw on a Dremel . The Foredom units are basically an industrial moto-tool with a much larger motor and cable driven hand wand - they are vastly more powerful than any Dremel and much easier to work with on delicate objects , yet still have the power to do the work . Good quality solid carbide cutters are getting hard to find , if you want to go that route for use in harder materials stick with US made bits . Just be aware , carbide is amazingly brittle due to it's hardness and can snap easily when side loaded too hard .Use double cut tools on ferrous metals (iron/steel , ect) and single cut tools for non-ferrous metals such as aluminum . Sticker shock soon to follow - I've paid $15 for one lousy double cut flame head long radius cutter in 1/8" shank , just used it yesterday to finish removing the last brass machinery tag off the head unit on the Clausing drill press - those are some of the hardest steel rivets I've ever encountered . Sarge 4 Share this post Link to post Share on other sites
PSully 61 #27 Posted March 1, 2017 16 hours ago, WHX9 said: Amen to that! Yes it was interesting Thread Sully, even had a video of a guy doing it on a rusted in twisted off dog point and it came right out. Be danged if I can find it. https://www.youtube.com/results?search_query=battery+to+remove+broken+bolt might be in here Some of those videos were pretty good. I don't get the first one though where he drilled a hole that was off-center, then re-tapped it. Share this post Link to post Share on other sites
Jayzauto 89 #28 Posted March 1, 2017 This will be an add on tip to Sarge's.....I've used the same trick, minus the high-tech tooling, as all I have is a Dremel*. But sharp, name brand screwdrivers are a MUST on this type of work, not the 3/$1.00 rubbish. I use Snap-On* as I have boxes of them. And I will grind down the sides to fit inside a carb well if necessary, when working on Main Jets. Others have suggested using Gun-Smithing screwdrivers, as they have the strength to do such work. Again, this is a tip, more for the inexperienced than the posters that have already been successful. GLuck, Jay 3 Share this post Link to post Share on other sites
WHX?? 49,485 #29 Posted March 6, 2017 Jay..... gunsmithing screwdrivers have a more defined ground tip and more detailed sizes that even the best snap-offs don't have. I sometimes hate to resort using mine for horse play as if you booger one up it might be ruined for 'smithing work. Share this post Link to post Share on other sites