SummaryI needed a Y Idler that maximized the space I had on the Y-axis. I needed to do a print that pushed to the absolute edges of the build plate. It works just as good as the i3 rework but is smaller in size and uses a smaller bearing. You'll need: 1 4mm bolt and nut 1 5mm bolt and nut 2 5mm washers 1 605Z bearing Sandwich the bearing in between the washers and then insert into idler. Screw the 5mm bolt through and tighten it with a nut on the opposite side, use threadlocker to make sure its stays put. Enjoy, feedback/suggestions always appreciated. Released through my company: http://northernlayers.com