Thats a 270-F geared bender. Made for bending tempered steel tubing, alum would bve no problem! But its damn expensive...250-300 new, couplke on Ebay for half that.

https://www.toolsource.com/tubing-benders-cutters-c-1321_1_830/270f-gear-type-tube-bender-34-inch-outer-diameter-p-177174.html
I expect George has one, so he uses it.
Cant argue with his method, very easy to control the bend, what with the fine gearing and mold table. Not too sure you'd have much luck with a conduit bender. 1/2" EMT is .706 OD, 3/4" EMT is .922 OD
I build recumbent bike seats with one and its a bit of a art, but easy to learn. Cheap enuf to buy and try...return if it dosent work for ya.
Id suggest rigging a table like he has or cut a wooden profile to match gaist. Hardest thing would be keeping it in the plane, i should think, but if the bends are okay, some clampy cleverness should do it.
Eager to follow your progress.
Another alternative is a free standing tubing roller.smallest die is 3/4"
https://m.harborfreight.com/tubing-roller-99736.html?utm_referrer=direct%2Fnot%20provided