Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5194386. This is a corexy conversion for an Ender 5 Plus printer. ABS is best but PETG works too. I made this in Fusion360. You need 3 linear rails MGN12H at 450mm, 12 idlers with a 5mm bore, I got the 10m roll of GT2 6mm belt and a bunch of 3mm and 5mm nuts and bolts. In the CAD picture you will see the idler diagram. Each idler has a 5mm washer on the top and bottom of it. Red is toothed and black is smooth. The best part of this is you don't use a 2020 extrusion for the x axis. I made it like this to get rid of as much weight as possible for faster movement. Be sure to download and print the Z axis linear rod mounts to delete the 2020 extrusion for extra space. Hope you guys like it... Parts I purchased: GT2 toothed idlers - https://tinyurl.com/mu66zadf GT2 smooth idlers - https://tinyurl.com/yea4p447 GT2 20 tooth pulley - https://tinyurl.com/2p9c2nrw GT2 timing belt - https://tinyurl.com/4zxe5r2p 450mm linear rails (x3) - https://tinyurl.com/255u2rwn Steppers I used are the ones that came with my printers These are the ones I'm using - https://tinyurl.com/2p8dxe83 Parts you should have: 3mm screws/nuts/washers - https://tinyurl.com/mr2xj5wz 5mm screws/nuts/washers - https://tinyurl.com/ysyn5ad7 3mm T-nut - https://tinyurl.com/y2ft26ep 5mm T-nut - https://tinyurl.com/4wpjujr8 amazon affiliate links above