Made my own arrow spinner today. Folks, I gotta tell ya, it is crude....and I mean CRUDE, but, it works great. Took a piece of 1/4 inch plywood, milled a slot in it, screwed an identical piece to the bottom of it, laid 2 ball bearing in each slot, and screwed the entire thing to 2 four inch pieces of 2 x 4..... like I said, crude...but, it spins great. I guess the moral of this story is this, it doesn't have to look good to work good. Don't be afraid to try something, it might just work.