This was a proto for approval, was going to ask customer for preference between split ring,stainless ball chain,and carabiner.
Personally like 'biner because that's what I use, BUT it's the only one that doesn't specifically say "Made in USA" which means the big C.
I use ones made in France, but haven't really searched much.
A Shopbot friend recommended this company;http://www.ballchain.com/estore/merchant.mvc?Screen=PROD&Store_Code=BCM&Product_Code=4SS
Crib boards were based on a basic design,and then Kirk on the Northern Desktop made the first ones on the site. We've parted ways, but he may be a vendor for us. His Desktop is here in my house, but Dad financed him a router version of the Shopbot Desktop for his 2 year sweat investment.
Some pics of the dozen he made for a local shop are here if you scroll down.
Website being revamped.https://www.facebook.com/AlosadaMaine/photos