Tonight I built a flange straightening tool to aid in the straightening of the rib flange to 90 degrees. The flange and the web both get warped due to the punch process when the ribs are made/punched out of aluminum sheet and formed. This tool helps make the 90 degree flange more consistent and faster/easier...I hope.
I used the materials list from Jason Hess and adapted my own dimensions to make this tool but want to give credit to Jason for listing the instructions for the tool...so check out his site below if you want to make one of these.