Ender 5 Plus Linear Rail Gantry Upgrade

thingiverse

This is a complete overhaul of the ender 5 plus's gantry. After trying the Merc One core-xy mod, I found that the belts were far too long to prevent ringing, and the belt path too complex to avoid problems. Also, the stock belt arrangement really sucked. So, I designed this, inspired heavily by the Voron and Merc One's designs. This mod uses a 2:1 gear ratio on the Y axis motor to help avoid ringing and is designed to use the Voron afterburner with a standard Voron mount. I also have a design that allows for a second linear rail to be mounted underneath the X-axis aluminum extrusion, so I may upload that if there is any interest. Also, you will need to trim the X-axis strut to 500mm. Parts List: 7x M5x50mm Machine Screw 8x M5x30mm Machine Screw 6x M5x25mm Machine Screw 2x M5x20mm Machine Screw 8x M5x15mm Machine Screw 4x M5x10mm Machine Screw 8x M3x20mm Machine Screw 8x M3x10mm Machine Screw 15x M5 Machine Screw Nuts 16x M5 T-Nut 8x 5x4 M3 Tapered Heat-Set Insert 11x 5x30mm Shaft 3x 5x250mm Shaft 2x 5-5mm Shaft Coupler 4x F695-2RS Flanged Bearing 2x NEMA 17 Motor Note, I would not use the stock ones, they are not very good 4x 20 Tooth GT2 Pully 9x 20 Tooth GT2 Idler 1x 20-40 Tooth closed loop gear reduction 1x 10m GT2 Belt Note, you could get away with 5m, but personally I like having backup belts 1x Voron Gantry Carriage Note, any version should work, but I used the Merc One carriage for mine 1x Voron Afterburner Note, again, anything should work, but I prefer the Afterburner 3x 450mm MGN12H rails and carriages Note, the screw count does not consider these 1x Merc One X-Axis Endstop (https://github.com/ZeroGDesign/Mercury) 1x Merc One Y-Axis Endstop Other Notes: I would use belts with a nylon cloth coating, I've found they print and wear slightly better; however, normal ones should also be fine. I found that most of the 20-40T sets on amazon come in packs of two, so at some point I may upgrade this design with another 2:1 gear ratio for the X-axis motor. Also don't forget to download the CAD Drawings if you need help assembling this. You do need to modify your firmware to run this, feel free to message me if you need help compiling it. If enough people need it however, I may upload compiled firmware at some point. I might also make a drag chain adapter at some point. As personal preference, I used 2A 0.9deg motors on my printer, I do not know what the max current the stock motherboard is but do remember to check if you're going to use the stock motherboard. Also, the stock motherboard may have trouble keeping up if you're going fast with the 2:1 gear ratio on the Y-axis (it definitely will have a problem if you're going with high micro-stepping or using 0.9deg motors like me).