After fooling around with "eyeball bends" I came to the conclusion my eyeball wasn't very good. I'm a beliver of doing the math & laying out the marks correctly, much faster and, if you are doing multiple runs, then all bends look alike.
I prefer the no brainer 30 degree offset for bends up to about 6". Checkpoint makes a level that has a 30 degree bubble & the level has magnets that are strong enough so the level doesn't fall off the conduit.
Few things are harder to put up with than the annoyance of a good example.
Re: How do you bend EMT offsets?#44033 10/26/0406:05 PM10/26/0406:05 PM
I do box offsets by eye, but for larger offsets, I was taught a different way. However deep your offset is, multiply that by two and thats how far apart your two marks go, then make both your bends using the 30 degree mark. It works perfect every time. For example if you want a 6 inch offset, put your two marks 12 inches apart then use the 30 degree mark to bend them.
Re: How do you bend EMT offsets?#44035 10/26/0408:24 PM10/26/0408:24 PM
This is dear to my heart. An important consideration when running conduit is the realization that at some point in the future you will have to pull wires into it. Therefore steps should be taken to ease this impending task. For instance, consider using 22.5º degree bends instead of 30º. Or even better use 10º bends if you can get away with it. The formula for 22.5º is multiply by 2.6. For 10º use 6" for every 1" of desired offset. Another thing to try is what is known as the super bend -- that is using a larger radius than the standard one shot. This is for 90º. To make it you use your bender like a hicky -- you advance it in small steps and bend the tube at small angles at each step. 45º bends are a killer. Try to plan your runs to minimize the degree count. For instance instead of 90ºing up out of a box, instead use a 12" offset. This will save 30 to 45 degrees. If done properly, it should be possible for one man to push the wires in [solid] instead of two to push and pull and chatter. ~Peter
Re: How do you bend EMT offsets?#44038 10/26/0408:32 PM10/26/0408:32 PM
I eyeball box offsets. Biger than that it's the bandfield method. Most of time 30 deg. If you have a newer ideal bender 30 deg the handel is strait up. I don't look at the 30 deg mark on the head just that the handle is strait up. I stamped the multipliers on top of the bender head for when my brain can't think in the morning. Anyone use those little kickers?
Re: How do you bend EMT offsets?#44039 10/27/0401:39 AM10/27/0401:39 AM