The term “conduit bender” is a bit vague. Originally, it was a bending shoe with a long handle against which you’d push pretty hard and you’d typically use the floor or a wall as the opposing force.
When it comes to home shop fabricating having the correct tool or tools is an extremely important factor for success. Sure, one may be able to create a component with a mallet and a block of wood, but ...
Both are fairly thick-walled and use threaded fittings. To bend either one on a conduit bender, you must use a shoe rated for conduit. If you use a tubing shoe instead, you will likely damage the shoe ...