I haven't seen the way I do this yet... I use a conduit cutter available from home depot and others. It looks like the tool you use for copper tubing but is designed for EMT. See https://www.lowes.com/pd/Southwire-Conduit-Cutter-Scorer/50199705. as an example. I'd go to home depot/lowes and go to the electrical tool aisle and pick the one which seems best. Note that I've found that the ones designed for EMT aren't good at copper and vice versa.
When using this with EMT , the keyword here is 'scoring', not 'cutting'. Just like glass. Clamp it on, run just enough to get a good score, then take it off. Don't try to cut the EMT , just get a good score on it all the way around. Then clamp one end near the score (I use a bench vise, I've seen others use a some sort of portable pipe clamp). Grab the free of the pipe and pull it toward you and the EMT will snap in half right at the score. If you end up bending the EMT instead of snapping it you didn't score it enough. If you end up with the end of the EMT with a "reverse flare" or "swage" as you put it, you scored too deeply and deformed the pipe. Some people just deburr using whatever is on the conduit cutter, but I find those generally suck. I've had good luck with the hand tools specifically for deburring/reaming. For instance one like https://www.lowes.com/pd/Southwire-Plastic-Handle-Conduit-Reamer-Screwdriver/50083080 . But my favorite tool is one of these: https://www.homedepot.com/p/Klein-Tools-Conduit-Reamer-Drill-Head-with-2-Square-Recess-Bit-85091/203745561 Sticks into your drill/impact driver. Can deburr pretty much anything you throw at it including the nightmare after hacksawing EMT when you can't find your tubing cutter. And the bit in the tip will fit into the screw on the interior EMT fittings, you just have to be careful not to overtighten and cave in the EMT. Note the above links are examples, I've had good luck with pretty much any good quality tool I've bought from Klein, SouthWire, Dewalt, etc. Found a video which describes the method: https://www.youtube.com/watch?v=49hGBHy8Heg I should note two things about this video. FIrst I've never used the inside of my conduit bender handle, I'll have to try this next time since that would prevent the accidental bending of the conduit from the method I use. Second, he mentions that this method works great on 1/2, but is more difficult but still doable in 3/4. That matches my experience as well. I can't say I've tried it at 1". Note the above applies to EMT, not anything else. Once you get into IMT it becomes more like plumbing. On Sun, Jan 19, 2020 at 9:46 AM <ch...@wbmfg.com> wrote: > I haven’t run a ton of emt in my life but some. > I have a new garage to wire. > > What is the best way to cut and deburr emt? > > Normally I use a sawsall with a hack saw blade in it. > Never notice what really proficient electricians use. > > My method leaves me with an angled cut with plenty of rough edges. > I am sure there are deburring tools dedicated to emt. > > I am considering using a tubing cutter but I don’t want the end swaged > down to a smaller size that might catch and skin the wire a bit. > I guess some kind of tapered reamer could then smooth it out. > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- - Forrest
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