Hictop D3 Hero Purge Bucket and other upgrades.

thingiverse

Purge Bucket P1 Purge And Seal Bucket.stl is the purge bucket. Mirror it to fit Purge Bucket P2. Fixed to the machine with two M3 by 12mm screws. It has one M3 by 6mm screw in the back to precisely adjust the wiper height. The wiper is cut to fit from a 3mm by 20mm strip of silicone rubber. Prints without supports with fan on. The counter-bore for the adjustment screw is ugly, but it won't fail the print or mess up the fit of the screw. Extruder Nozzle Seal P1 bucket seal.stl is the extruder nozzle seal. It uses a 15x40x3mm strip of silicone held on with a zip-tie to seal the nozzle. It also has one M3 by 12mm screw in the back for height adjustment. Extruder Guide P1 Extruder guide P1.stl holds a PTFE filament delivery tube for minimum friction. It's held on with two 8mm by 3mm round magnets. Print it mirrored to fit Purge Bucket P2. Purge Bucket P2 Tension Lever Purge bucket P2 tension lever.stl is a replacement part for the extruder, print it if you have to wait for spare parts. Extruder Cable Clip Extruder cable clip.stl is a simple extruder cable guide that snaps onto the frame. This version has a correctly sized cable slot so you won't have to re-shape it with a heat-gun. Note: All threaded holes are 2.7mm, so a 3mm screw should form good threads. If you have trouble, tap the holes or pre-heat the screws with a heat-gun. 9-16-2019: Having really great luck with PrusaSlicer and no-purge tool-changes. The nozzle seal and wipe work well with rapid switches and a small z-hop and retraction. Still optimizing the configuration before I post it. 9-22-2019: Added an PrusaSlicer config file with my best settings so far. If you get random foamy-spots in infill, your 'max volumetric speed' is set too high for that filament. If you get a foamy or broken initial extrusion after a tool change, then you need more 'extra length on restart'. Finally, this config has good settings for the 'machine limits'. The defaults for a new printer are way too high/fast and lose steps. 11-12-2019: I recently started playing with the extrusion width settings in PrusaSlicer. I found that PrusaSlicer sets the infill extrusion width narrower than the nozzle by default. If you set it to about 110% of nozzle width (so 0.43-0.45mm) like the perimeters, It lets you raise the maximum volumetric speed without getting gaps in the infill. I got another 20-30% speed improvement. Additionally, I was able to get gap-free prints at a 2x higher max volumetric speed setting if I set my extrusion width to 0.6mm with 0.3mm layers instead of 0.4mm with 0.2mm layers. I've only tested this with my upgraded extruders, but the trend should hold for the stock extruders. 11-26-2019: The controller in the base of the printer has a 5010 cooling fan and mine started making hellish noises. When I took the Printer apart to check on the fan, it sounded just fine when run on the bench. So the fan mounting must be making the problem worse. The new part "Controller Fan Mount.stl" is one half of a springy mount for the controller cooling fan. Each part bolts to the fan with 8mm M3 screws. The final assembly then bolts back in place with the stock screws and the fan rotated 45 degrees. The mount also adds a 3mm gap between the cover and the fan which greatly increases the cooling air flow to the controller.