Phillip-SC Posted February 22 Share Posted February 22 No doubt everyone on this forum is VERY familiar with the dreded flat spot created in large cold formed steel circles (and scrolls, too). On a short run basis, this is no big deal, since you can hammer a nice short curve in the ends of the flatbar or roundbar workpiece. But what if you are making a ZILLION (well, 90 anyway) CIRCLES?? I find myself needing to make over ninety 15-inch circles from 1-1/2" x 1/4" steel flatbar, and that is a good thing, but I would like to save time on the ends of my 47 inch workpieces if possible. Has anyone here come up with a quick and consistent way of prebending the ends of what will become a hoop, that they would like to share? I've tried pressing into a small curved space and that does not seem to be the ticket to success. I would be great to have a swage block with a large radius, using a quick hammer blow, but that isn't available. Thanks for any solutions or hints to getting that curve onto the ends of the flatbar. PLEASE NOTE: Often times the flat parts are simply made to overlap, and then the excess is trimmed away, BUT my workpiece is just under 4 feet in length and that allows 5 circles to be taken from a standard 20-foot "stick" of flatbar. Thus, using the trim technique would lead to a lot of wasted raw materials. Thanks for any input! Quote Link to comment Share on other sites More sharing options...
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