eric sprado Posted November 29, 2011 Posted November 29, 2011 I have a HF bender,but I don't know if it will be best solution to my job. I need to bend some 3/16x3/4 the hard way in just about same radius as a 55 gal. drum. My client builds earthen baking ovens with 55gal drum as core. The 3/16x3/4 is to stiffen up the edge of the door to the oven. Any ideas out there?This is actual picture of one of their stoves. You can find more neat stuff at: www.firespeaking.com Quote
bigfootnampa Posted November 29, 2011 Posted November 29, 2011 Shouldn't be hard to do what you'll need. I'd likely just use my hammer and bend that cold but you could do it many ways. Quote
eric sprado Posted November 29, 2011 Author Posted November 29, 2011 We did a couple with hammer and anvil,but would like to gear up to make a bunch of them and have the bending part go a bit faster. Quote
Drewed Posted November 29, 2011 Posted November 29, 2011 If your going to do a bunch, I'd make a jig to bend them around. Heat them up and get mid-evil on it! Quote
Tim S. Posted November 29, 2011 Posted November 29, 2011 To me the key question is how many are you making at a time. That cross section could be bent hot (Torch) around a simple jig. with a little torch practice you should be able to form those without hammering back to flat. However, this is a slow process. You could do it in the HF too but it will need some tooling to make a good job of it. A big DiAcro could do or they could even be bump formed in a ram bender with some basic tooling. If you have enough, somebody with a small angle roll could set up and run those out pretty easily. Quote
Maillemaker Posted November 29, 2011 Posted November 29, 2011 Could you fab up something like this?http://www.alibaba.com/product-free/800013833/Manual_Bar_Bender.html I remember seeing a pipe bending jig on Orange County Choppers that comprised of three shaping wheels (two small, one large) and a large crank attached to the large wheel. The top wheel was adjustable, and when cranked, would draw the steel around the wheels in a precise radius. Quote
nhblacksmith Posted December 3, 2011 Posted December 3, 2011 I have both a large Hossfeld and Diacro but if I were doing this operation, I would use slip rolls, especially for the relatively large diameter of a 55 gallon drum. Once the rolls are set, you could literally crank out dozens, if not hundreds per hour. You can even build the rolls if you don't have a set. they don't need to be fancy. Quote
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