Originally posted by BillyShope
A mandrel bend can be made on most benders if you want to go to the trouble of attaching a ball to a rod which is inserted into one end of the tube.
What's the ball made of? And doesn't it get pinched in there pretty tight once you make the bend? How do you keep it from getting stuck in there for good? Is it something a novice would want to try while using a Harbor Freight or similar type pipe bender - which is the wrong size for bending tube?