[Cabbagestack]

You can also purchase a 6 spline PTO adapter for $20 off eBay and it’s 3” long to boot. They fit perfect and don’t need to make at that point. I’ve press fit them into pulleys and spindle wrenches and they hold forever. That’s how I’ve made all my spindle collet wrenches.

Have a link to that 6-spline adapter so I know what you are talking about ?

*as an aside when I post a quotation I try not to include all the OP's pictures and so forth, only just the essential pertinent part of the OP's post --- else it needlessly wastes bandwidth, takes up too much room in the thread for redundant stuff. Just sayin.