G+_Dave Ethington Posted April 14, 2016 Share Posted April 14, 2016 Finally got my transformer so I can finish my hot wire foam cutter. Next step: Adapt metal melting furnace to use propane instead of charcoal. I'm going to call it my "Primal Force 3D Printer". Link to comment Share on other sites More sharing options...
G+_Dave Ethington Posted April 14, 2016 Author Share Posted April 14, 2016 Props to Grant Thompson for the build videos: https://www.youtube.com/channel/UC1zZE_kJ8rQHgLTVfobLi_g Link to comment Share on other sites More sharing options...
G+_Travis Hershberger Posted April 14, 2016 Share Posted April 14, 2016 I don't need diy stuff like this put into my head. Right at the moment it's saying "I bet I could make an arc cutting machine with the right transformer." Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted April 14, 2016 Share Posted April 14, 2016 Convert a 3d printer PCB into a CNC foam cutter. (really just a software tweak) I wanna do that for my plasma cutter. Quick Q, what are you using for a crucible? Travis Hershberger That's been done to death in the hobby world (and pro) The Home Shop Machinist rand a series of articles way back on making one. They are called EDMs (Electro discharge machining) There are wire versions for 2d cutting, and sinkers for doing holes. Sinkers are typically used for removing broken taps, drills etc. Its very slow but very precise. Link to comment Share on other sites More sharing options...
G+_Seth Leedy Posted April 14, 2016 Share Posted April 14, 2016 You had to put it further into his head ? Travis Hershberger? don't listen ! Link to comment Share on other sites More sharing options...
G+_Travis Hershberger Posted April 14, 2016 Share Posted April 14, 2016 Eddie Foy I saw what they could do in an engineering testing department way back when. Really cool, and yeah, also very slow. Slowness is understandable as using that method is more about precision than it is about speed. Link to comment Share on other sites More sharing options...
G+_Dave Ethington Posted April 14, 2016 Author Share Posted April 14, 2016 Eddie Foy Crucible: http://www.budgetcastingsupply.com/Crucible-Clay-Graphite-A-Shape-A6-p/5062.htm I have some tongs that a friend helped me weld from some bar stock for lifting out, a portable sandpit for pouring over, and an adapted heating duct ring for pouring with. I'll have to get some photos of my set up. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted April 14, 2016 Share Posted April 14, 2016 Dave Ethington what metals you doing? Alum & brass seems to be the norms. FYI, Alum doesn't like to stick to copper. So if you want to make alum bar stock, copper pipe should work nice. Fill it up, and a few wacks should break it free. (Learned this from laser cutting ) Link to comment Share on other sites More sharing options...
G+_Dave Ethington Posted April 14, 2016 Author Share Posted April 14, 2016 Eddie Foy I'm just doing aluminum right now. I hadn't considered casting to bar stock. That sounds worth trying Link to comment Share on other sites More sharing options...
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