Design download, and more information can be found at: <br />http://www.thingiverse.com/thing:1977727 <br /> <br />Check out some of the full build updates on: <br />https://www.facebook.com/Sub33D/ <br /> <br />This printer was designed to print very large scale using recycled ABS plastic (we also recycle, shred and produce recycled ABS filament). <br />Most of the other very large scale printers out there tend to print in PLA which is a lot less problematic at large scale. <br /> <br />Main features: <br />- Build volume 1200mm x 1200mm x 600mm <br />- H bot layout with fixed heat-bed (4 x z-axis motors to move the light weight H frame rather than the insanely heavy heat-bed) <br />- 1mm nozzle, double volcano extruder hot end to increase flow rate (80W total heater power) <br />- 2400W heatbed using 4 x 230V 600W 400mm x 400mm silicone heating pads (controlled with 25A solid state relay) <br />- 2 x Recycled Nema23 stepper motors for y-axis, driven by single 5A CNC type stepper driver <br />- 4 x Recycled Nema23 stepper motors for z-axis, driven by single 5A CNC type stepper driver <br />- 1 x Recycled Nema23 stepper motor for x-axis, driven by standard 2.5A stepper driver <br />- 1 x Recycled Nema17 stepper motor for extruder, driven by standard 2.5A stepper driver <br />- Designed in Sketchup Make 2017, design file included in thingiverse link downloads (Sub33D v3.07.09.skp) <br />- Frame built from 50mm x 50mm x 2mm box section aluminium <br />- Total build cost is close to $2000 AUD <br />- Marlin-RC firmware also included in thingiverse link downloads (Marlin-RC.zip) <br /> <br />If anyone is thinking to build something like this I would recommend using a 12mm heat-bed plate (rather than 6mm) as the aluminium plate deforms up to 5mm when heated to 90 deg C, I am using 9 x 9 point auto-bed leveling to pick up the deformation shape). <br />Also the 400mm x 400m 600W silicone heaters are a little small as the distance between them causes around a 10 deg C difference on the heat-bed surface between the heaters and above them). <br />I'm Currently fitting 4 x 150W IR heaters to reduce heat-bed deformation and maintain consistent heat on printed ABS parts. <br /> <br />Special thanks to Substation33 for all the support and recycled materials.
