HK13-UM2

thingiverse

This is my version of a UM2 clone, which we use at work. I designed it in OpenSCAD and like the performance. The frame uses 12.8mm square tubing that can be found on Hobbyking.com. It features standard Ultimaker2 sliders, print head, and 610mm belts. I made some adjustments to the Z axis using two T8 Leadscews driven by one stepper motor. I suggest adjusting the SCAD file and printing a size test first to get your printer's tolerances right. Then adjust the other SCAD files for good parts. Please note that this is not finished yet. The SCAD files are incomplete, so when I upload the STLs, it will be ready. This project was created for my own use, but I wanted to share it with you. You can see my progress at https://youtu.be/se7xleir_k4. The following parts were ordered from Hobbyking.com: * 18 x Hobby King 12.8mm x 340mm square tubes SKU:450000078-0 for $1.04 each * 2 x Hobby King 12.8mm x 250mm square tubes SKU:450000075-0 for $.80 each * 4 x Hobby King 12.8mm x 400mm or 600mm square tubes for Z height, with prices as follows: + 400mm SKU:450000081-0 for $1.27 each + 600mm SKU:450000084-0 for $1.60 each You can find the square tubing at https://hobbyking.com/en_us/drones/diy/aluminum-tube.html. The following parts were also ordered: * 8 x 8mm Linear Rods * 2 x 8mm x 300mm T8 threaded rod and nut * 10 x 20T GT2 Pulleys with an 8mm bore * 1 x 20T GT2 Pulley with a 5mm bore * 2 x 20T GT2 Idler (No Teeth) Pulleys with a 5mm bearing * 8 x KFL08 8mm Pillow Blocks * 4 x KP08 8mm Pillow Blocks * 8 x SK8 8mm rod mounts * 16 x M5x16mm screws for the KFL08 * 16 x M5x25mm screws for the SK8 * 8 x M5x30mm screws for the KP08 * 2 x M5x40mm screws GT2 Idler Pulleys (Z Tension) * 100 x M3x25mm screws for frame, carriage, T8nut, and extruder * 100 x M3 Nyloc Nuts * 40 x M5 Nyloc Nuts * 4 x 610mm gt2 belt * 1 x 752mm gt2 belt * 1 x ultimaker 2 printhead * 4 x ultimaker 2 sliders with bearings and springs Printed parts include: * Top 4 corners * Bottom 4 corners * 1 x Kp08 Left * 1 x Kp08 Right * 1 x Zstepper * 1 x Smartlcd mount * 1 x RAMPS mount * 1 x Stepper Extruder mount * 1 x Tension Brace * 2 x Stepper Coupler mount * 2 x Zaxis Carriage * 2 x Zstep brace * 4 x bed crossmembers * 4 x feet * 5 x RAMPS spacer The SmartLCD cover can be found at https://www.thingiverse.com/thing:1203814