HE280 Zesty Nimble Hat (Rostock Max v3)

thingiverse

Got my nimble! And it fits! Finally, after making several designs that interfered with something I hadn't modeled or were too tall, I have a working mount for the Zesty Nimble on SeeMeCNC's HE280/Rostock Max v3 hotend/printer. Step file included, once I get my nimble, I'll test fit it and post pics. Solidworks files available upon request, but they're a jumble of parts combined into assemblies back into parts/bodies, finally cleaned up. Best to print at .1mm layer height, pretty slow, and probably 100% infill. You'll definitely want to print with support too - I set it pretty dense at 25% on my first go at it. The bottom won't look the prettiest, but it will be hidden anyway. History July 7, 2018 Bad news. :( I printed some new hats in April of this year... and one of them broke. :( I made it with some polycarbonate blend, I forget the brand. Either it broke from over-extending front/back from the flex drive's cable, or just fatigued from the same motion. https://i.imgur.com/x6vXdTu.png Maybe I'll reinforce the hat. Maybe I'll just try a different material. June 19, 2017 My nimble finally retracts! Follow the documentation for the nimble to get it to work. I had changed the max start extrude rate, but... I had lowered the current too much, and the stepper didn't work, soooo. Yeah. My bad. Had I not touched the current, none of this would have happened. June 9, 2017 Added three more flies, this one with the hole for the PTFE tube to sit flush with the top surface, like every other nimble mount. Originally, I had designed it to jam the PTFE tube between this cover and the hotend, but hitting the exact PTFE tube length to prevent obstruction is crucial. June 20, 2017 Done, for the final time, I hope. Will print tomorrow and test fit. Basically the same as before, just a bit taller so the nut doesn't interfere with the fan plugs. Depending on the length of the hardware that comes with the nimble, it may need to be ground down a bit. February 23, 2017 After being unable to get my slicer to add supports as I wanted, I went ahead and added my own in Solidworks. I ended up printing half with my supports, half with slicer, and while mine took more time, they worked considerably better and snapped right off of the print with no need to scrape/clean up. February 20, 2017 Done, for the final time, I hope. Will print tomorrow and test fit. Basically the same as before, just a bit taller so the nut doesn't interfere with the fan plugs. Depending on the length of the hardware that comes with the nimble, it may need to be ground down a bit. February 18, 2017 Printed and I realized there were a few thin spots, so it will still need some tweaks. It's also a bit too short on top of the hotend/PTC bit, so that needs to be cleaned up (but it's supposed to be tight to hold the PTC fitting down, so the nimble can apply pressure to the PTFE Tube). Firmware Settings Basically, see this: http://zestytechnology.readthedocs.io/en/latest/nimble_single/tuning.html Set your EXT0_MAX_START_FEEDRATE to 1 in the firmware or through the PC with the EEPROM, or through the display. Same goes for acceleration. Set your retract distance and speed in your slicer. For V_ref/current... This one you may want to leave as is. I lowered mine substantially and it didn't work. But I'll try tuning this around soon. It currently makes tons of noise when running, then again... I just picked a random 170/255 on the digipot and it worked.