@kylemp and I have been working on this project for some time now. The idea is to make soft jaws that will fit an 8 inch manual chuck. This has proven to be more difficult than it sounds. The main challenge is recreating the teeth that engage the scroll plate. I didn't realize the geometry is this complicated. We did make one jaw that works in my chuck. It turns out that my 8 inch GS 3 jaw and his 8 inch Bison 6 jaw take the same jaws.