Electrician Apprentice HQ #1 Online Resource For Becoming An Electrician Last updated on October 22nd, 2026.
If you’re just starting in the electrical trade and haven’t used a Chicago bender yet, it is a manual conduit bender with a long history in the trade. The origin of its name is uncertain.
Chicago benders are primarily used for RMC (rigid metal conduit) or IMC (intermediate metal conduit), not EMT (electrical metallic conduit).
Components of a Chicago Bender
Before using a Chicago bender, identify its components:
- a bending degree indicator
- a pipe hook that holds the end of the conduit
- a handle that slides into the lever unit (if you don’t have a handle you can use a piece of 1″)
- pipe supports that support the conduit during bending
Getting the Bender Set Up
Start with the bender on a flat surface. An uneven setup can make bends inaccurate, especially precise 90s, offsets or kicks.
If the bender has no handle, use at least a 5′ piece of 1″ RMC. A longer handle gives you more leverage, making the conduit easier to bend.
I secure the bender’s wheels so it cannot move. The T-shaped base provides some stability, and bracing it when possible makes the setup more secure.
Precautions When Using a Chicago Bender
- Keep the conduit under control when unloading from the bender.
- Make sure you maintain a firm grip on the handle. Spring-back may cause the handle to spring up suddenly.
- If you need to move the bender make sure you remove the handle and conduit before doing so.
- Inspect the bender before you use it. If something looks questionable don’t use it.
Try a new bender with a scrap piece of pipe if you have one. Take your time while learning to use it: Chicago benders differ and take some getting used to.
If you already use a hand bender confidently, those skills can help you get used to a Chicago bender and its advantages.
Useful link: Greenlee Mechanical Bender instruction manual
