I wanted to see if I could use a mostly standard design PFS to set up for heavy bands. This is a peice of birch ply that I cut, routed, quick sand and a couple coats of CA glue in just about 30 minutes. It's by no means perfect but now I know that I can use this size of frame for double TBG. It measures 1 in to .5 in taper 9 in bands. The pinky hole helps to grip it well. I'm going to build another with some of my special wood next. She ain't pretty but she's a beast!!