grbl_mill

thingiverse

grbl_mill fully printable large parts are printed with a 0.8 mm nozzle smaller parts with a 0.4 mm nozzle completly designed with openSCAD derived from http://www.thingiverse.com/thing:44854 you need the MCAD library https://github.com/SolidCode/MCAD Usage open grbl_mill_main.scad in openSCAD to view the assembled mill you can select the viewed part in the main file by commenting out the appropriate line in grbl_mill_const.scad you can adjust the main construction in the division Configuration you can configure the width (count) of profiles for each direction separatly there are some more flags to configuring the mill some tuning is done directly in grbl_mill_parts.scad all things are downloadable Working Area xy: 107.5 mm x 84.3 mm z = about 40 - 50 mm, depending from tool and using the t-nut profiles is enough for milling pcbs or hobbed bolts Profiles using alu profiles from http://www.kinetikmsystem.de K30 for the basic construction you can use for all directions a width of 3 basic profiles (like in the original design) but i had some sourcing restrictions so i am used on y 4 basic profile width and for the other two profiles length for z: 200 mm (movable) and 300 mm (fix) length for x and y: 260 mm K20 for the t-nut plate length is the same like for x: 260 mm Screws and Rods to connect the end parts to the profiles i have used M6 self cutting screws to fix the slider and the TR8 nut i used M3 screws fixing the t-nut profíles use M4 screws the T8 threaded rod and the TR8 nut i have sourced from http://www.metallbau-pietrzak.de (ebay) the trapezoid rods are 300 mm (x), 250 mm (y) and 200 m (z) long the motor coupler on all axes is from http://www.thingiverse.com/thing:173335 CNC-Control-Unit and Spindle Arduino Uno with Grbl V0.9j https://github.com/grbl/grbl GrblShield with DRV8825 driver chips the spindle is from ebay (China) with a Driver Board, that can be connected to the Grbl-Board