Rigid 1778 Conduit Bender

OliLt

Member
I am not a pro, but I am generally familiar with the markings on the radius of a bender that are used to make various types of bends in conduit. The question I have is what are the numbered markings on the neck of the bender where the handle
is inserted used for. The markings are numbered 1-4, but do not seem to correspond to inches when compared to a ruler.
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My guess is when those lines are parallel with the floor they are 10 degrees 20 , 30 and 45 degrees bend in the pipe. You could check that with a protractor.
 
I checked the angle of each numbered line relative to the axis of the neck where the handle is screwed in. The angle of the lines is 73-75 degrees, all basically the same. It does not appear that they correspond to any particular angle. Part Time Pete is correct, there are degree markings on the other side of the bending radius.
 
I've never seen that either. Maybe something to do with bending an offset. Like bending at this point gives a 2"offset or a 4" offset.
 
The marks are for "guess" bending an offset. When you are not going for accurate bends where you need to match everything for looks, one can just guess the bend. Like in a wall where it will never be seen again. A fast way to run pipe. If you need to match bends for exposed work you need to take more time to design the pipe work. I've been retired a long time and always look at the exposed pipe work wherever I'm at. joe
 
I agree with Old -9.
I have Benfield benders. They don't have those markings.
What puzzles me is there should be a 'A' mark for stub ups. The "B' marks 90 degree shrink back.
I am curious about the 'X2'. And what is that plate for?
 
To answer Souther Ray's questions, there is no "A" marking on this bender, and I don't know what the X2 represents. This is a 3/4" EMT bender with a 6" take-up. The plate covers a tape measure that starts at 6 inches. You hook the tape to the end of the conduit and then measure out to the length that you want the bend. I am not a pro, and only use this bender for simple stuff like box off sets, and 90 degree bends. The bender is from the mid 70"s. Searches for a manual have not produced any results.
 

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