Cartesian Plotter v3

thingiverse

This is the latest version of my pen plotter project, updated with aluminum v-slot extrusion for a more stable x-axis. For easier versions see these things: https://www.thingiverse.com/thing:4037180 and https://www.thingiverse.com/thing:3986756 Full details of the project are on [my website](http://andrewsleigh.com/plotter/) and in the [Github repo](https://github.com/andrewsleigh/plotter) ### 2020 or 2060? Note, there are files for two different versions of the plotter here, one that uses two lengths of 2020 for the x-axis, and one that uses one length of 2060. The 2060 files are more recent, and have some nice touches like an integrated electronics housing, but otherwise, they are very similar. I would suggest you make whichever one is most convenient. If you have 2020 lying around, use it! ### Improvements over earlier versions * More stable x-axis (and so less drooping of the pen at its furthest y-extension) * Much quieter motion on the x-axis, after swapping out linear bearings for a wheeled gantry * X-axis can be screwed down to a solid base for greater stability * Improved brackets for timing belt and linear rods on y-axis so belt can be more easily removed or tightened * Simplified and more compact pen lifter * Housing for Arduino and CNC shield can be removed or re-modelled easily (e.g. to fit a smaller Nano-based CNC shield) * Base has a rebate to fit a 60 cm cutting mat, to allow easier alignment of paper for plotting ### Other parts you'll need * 2 NEMA 17 motors * 2 GT2 timing belts * 2 8 mm linear rods * 4 8 mm (8UU) linear bearings * 30 or 40 tooth pulley for x-axis timing belt * 20 tooth pulley for x-axis timing belt * Large idler pulley for x-axis timing belt * 2 small idler pulleys for y-axis (not the larger Openbuilds pulleys) * 5 mm rods for pen lifter * Plenty of M5 and M3 hardware! * Large v-slot gantry kit (I got mine direct from China) * Tower SG90 Servo motor * Some GT2 belt clips, such as cable ties, or these nice removable clips: http://www.thingiverse.com/thing:2354961 (In the UK, I'd recommend Ooznest for all the materials you need to buy.)