Motorized Z-Adjustable Bed for K40 Chinese Laser

thingiverse

Inspired by Brianvanh's adjustable Z-bed, I wanted a motorized version controlled by a smoothieboard in my cutter. The realized bed can move its surface up to 30mm below the laser's focus. To assemble this bed, you'll need some printed parts and various bolts and nuts. Additionally, gather the following essential components: - Four aluminum profiles measuring 15mm x 15mm x 2mm, each 300mm long - Four aluminum profiles measuring 15mm x 15mm x 2mm, each 150mm long - One NEMA17 stepper motor, specifically the 17HS4401 model - Four GT2 timing pulleys with 20 teeth and an aluminum bore of 8mm - One GT2 timing pulley with 20 teeth and an aluminum bore of 5mm - Three idler pulleys with 16 teeth and an aluminum bore of 3mm - One closed-loop GT2 timing belt measuring 6mm x 1140mm - Three M8 threaded rods, each 67mm long - One M8 threaded rod, either 85mm or 67mm in length, for the handle (optional) - Six M8 nuts (four if no handle is needed) - Four 608 ball bearings measuring 8mm x 22mm x 7mm - Two micro switches with model number 105126SPGJL5375 - One piece of stretched metal, preferably a honeycomb plate made from steel, measuring 220mm x 360mm - Eight neodymium magnets, each round and measuring 15mm x 5mm To see the bed in action, watch this video on YouTube: https://youtu.be/CRq5Kx4GHnM