When you’re wiring up your shop, you really “ought” to run your wires through conduit, but the really cool tools for bending conduit and pipe cost too much to be practical for a small shop. So, if you’re going to do the job like the fire marshall would prefer, you might want to look at a less expensive option — a hand bender. For about $30 it provides a correctly shaped form for bending the conduit without breaking or kinking it.
You can buy them with or without the big metal handle, since a threaded metal pipe will work fine. This version from Gardner Bender features markings for the most common bend angles and a bend-back channel for slip-ups.
We’ve mentioned before that the Gardner Bender site is a mite tetchy, so I included a direct link to the PDF catalog — you’ll have to jump to page 57.