EX Delta Printer

myminifactory

I love my original Kossel Delta Printer, but I'm not thrilled that it only comes with a small print bed. That's why I've embarked on this project: to enlarge my Kossel to its full potential - a massive 220 print bed. I'm drawing heavily from https://www.thingiverse.com/thing:154832 as part of my rebuild, and I'd like to give credit to https://www.thingiverse.com/Crashoverride for his help in designing this upgraded Delta. To mount the 3/4 inch Aluminum square tube, I used #8 3/4 Self Drilling Screws on the printed ends. I've just completed my final calculations for this upgrade. This new design can handle a print area of 225mmx844mm or 9 1/16"x33 1/4". The maximum print size is 230x509.5, but it can also reach 230x527.5. Update: I've had some issues getting the Extruder base to sit level during my dry run process, so I've updated the RODS to 300mm from center to center. With this change, I was able to achieve a print surface of 250x475. Note: I'm not trying to take credit for all the STL files - I've simply modified them to work on my design. You may have seen them on https://www.thingiverse.com, but let's be clear: I didn't design them from scratch. As of today, June 12th, 2017, the new EX Delta is complete and working like a charm. I've added springs to the bed so I can adjust them as needed, and I've also added a second power supply to power the bed. This was necessary because it was taking too long to heat up the extruder and bed at the same time. To speed things up, I used a 25 amp power module with the second power supply. I've also included the firmware I used to get this Delta working. Additionally, I've added a lower base to give the Delta an extra 2 inches of clearance for the extra power supply. In short, everything I tried or used is now part of this delta, and they all work like a well-oiled machine. This final version with 300mm rods can print on a 12 inch bed if you want to take it to the next level. The final print area is 220x454.7 with an extra 40mm at the top.