Y axis full setup - ender3v2 and similar

included with patronage -------- update July 2024 more user-friendly endstop mount -------- This is a fully redesigned Y axis setup. I have made a wheel version of it, but the rail setup is the perfected one. This will allow any nema 17 motor up to 48mm long on the Y axis. The rail model was designed so that the belt is parallel to itself and perfectly flat for better precision, as the slightly triangular shape of the belt Amy not have a perfectly linear movement reducing precision. --------------------- - Hardware needed - --------------------- --------------------- Tensioner: (rail or wheel model) - you will need a longer GT2 belt (you will need 800~900 mm worth of belt), I included printable belt ends (one heat insert and one m3x8 for each one) - The Y extrusion front lower two holes must be threaded to M5 type (ender3v2 already is) - GT2 20T toothed pulley (https://amzn.to/3WGl7LE) with 5mm or 4mm bore, made for 6mm belt (should be about 8.5mm wide) - M5x16 or M4x16 depending on the pulley bore size - M4x20 (installed on the slider to then screw into the hand tensioning wheel) - M4 nut for the hand tensioning wheel (use a soldering iron to push it in) --------------------- Rail Bed mount: - two 300mm MGN12H rail (installed them to be flush with the front edge of the extrusion, against the tensioner) - 24 M3x8 to install the rails - 24 M3 t-nuts to install the rails - 8 M3x6 to mount the printed rail mount to the rail carriage - four M5x12 to secure the bed platform to the printed rail mount (those are shorted than stock M5) - four M5 lock nut (you can reuse the stock locknuts) Optional: - Two M3x6 and two M3 heat inserts (M3 x 4mm L x 4.5mm or 5mm OD) if you want to mount an adxl345 generic type or any that will fit on a 15mm screw spacing --------------------- Motor mount (works on both rail or wheel setup): - Four m3x8 to mount the motor - two M5x12 (socket head only, button head won't fit) or longer to mount the printed motor mount to the extrusion - GT2 20t, 5mm bore, timing belt pulley for 6mm belt (https://amzn.to/3WIxTtc) - optional F695 Flanged Ball Bearing (https://amzn.to/4dyd2ia) --------------------- Endstop: (works on both rail or wheel setup) - two M3x8 - two M3 tnuts - stock Y endstop PCB switch, and stock self tapping screws (M3x6 should work too with a bit of force) - optionally M3x6 and M3 heat inserts (the cover stays in place without this)