Rick, here's a generic shot showing the bender I purchased for this frame build.Gives us a show of that bender when you've a chance. Looks like a good design in progress. Rick C.
Curtis that is a great value in a tube bender. I think you are going to be very pleased. Rick C.Have you tried to annul the tube first, to soften it? Just a thought..........Curt
I bought this one, it is good to 1". Haven't tried it on aluminum yet.
https://www.northerntool.com/shop/tools/product_200350437_200350437?cm_mmc=Google-pla&utm_source=Google_PLA&utm_medium=Metal Fabrication > Pipe + Bar Fabrication > Pipe + Bar Benders&utm_campaign=Woodward Fab&utm_content=1455063&gclid=CjwKCAiA7ovTBRAQEiwAo8dPcdr9Aw8qG_BbLBpVaR8s5AraqK9BvVaxc3xIinfZN7QoknvrFHuggBoCSyIQAvD_BwE
I've also done this in the past......worked fairly well.Back in the the fifties and sixties we did it the "poor boy" way, filling the tube to be bent with fine sand and capped off the tube ends, then proceeded with the caution the bending process. This worked quite well to prevent deformation with thin wall steel but I don't recall ever "packing" aluminum tube in those days, though it should be helpful on any metal tube. I hope this is of some help. Rick C.