I made my own bender from scratch and not that anyone would want to go to the extent I did, but I throw this out there as a possible solution to the issue, even if you don't go as crazy with it as I did. What I did was make the base of the bender head out of the larger square tube used for trailer hitch's it has 2 - 3/8-18 bolts on 2 - 90* sides and is @4" tall so it can be removed from the post. For the smaller square tube (telescopes into larger) post I drilled a 4" hole into the concrete in several locations both inside and outside, dug out under the slab and poured a large footing with a sleeve (the large tube) imbedded in the floor. This way I can just drop the post into the floor hole in whatever location it best suits the type of bending/work I'm doing. Having multiple post locations also helps me to set up for production as I do lots of different projects that require different production line setup's. To extend the utility of this system I have also mounted the same 4" of large square tube with 2 - 3/8"-18 blots to a number of other Items: my bead roller, shrinker, stretcher, vices, other types of benders, my reloading presses......... And have plans for many more. And to extend that even further I have an even larger square tube that receives the bases built into my work bench and my welding table, which is very useful when I need any of those tools at any of those locations. So I can put the vice in the work bench to work a part, move it to the welding table for another operation then to a post outside to complete work and never take it out of the vice. Best of all when the posts come out of the sleeves or out of the benches there is no obstruction at all. This system has morphed over the last 10 years as parts were added but if I built a new shop I would definitely put in more sleeves in the new slab. As for the trailer hitch I have a set up there to as I do a good bit of jobsite bending as well, having a mini truck mine is @ level with the bed. I made a square tube tee that goes in the receiver, my post slides in the tee. I jack the truck up slightly and tighten the 2 - 3/8"-18 bolts in the tee then let the truck down and that pressure makes the post good and solid. The tee extends out a bit from the truck to give clearance for bending. This setup also makes it a breeze to rotate the bender 90* if necessary. The handle of my bender is made of the smaller square tube so it can be inserted into the hitch as well for quick small bends.
Sorry not trying to be a longwinded brag, just wanted to share stuff that has worked very well for my shop.
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Ken H in AZ
Knowledge is like manure, it won't do any good unless you spread it around.
Ken H