Spool holder and line guide for prinrbot plus

This is a great little spool holder and line guide that I designed from viewing and trying other designs that just didn't quite work for me. The tolerances for the threaded rod are off set by .2mm for shrink factors. The threaded rod is 6.1 mm in diameter that you can find at your local hardware store which I just had laying around, you will need 4 of them each being about 80mm in length and 16 nuts (longer if using a wider spool which mine is 54.5mm wide). The bearings this took me awhile to fi