How to change filament on Pulse. It only backs up half way



  • Hello I am new to the Pulse XE. I have been printing with Nylon pro series with massive shrinkage so I wan tot change to the Nylon X and on the control panel I go to change filament and the nozzle heats and and the feeder backs up the filament a little bit then stops. Ok so no the filament is somewhere halfway between the 2 feeder motors. How do I now get i out. I cannot yank it past the first feeder motor. I would expect the first feeder motor to back up all the way out.



  • @surfmagic Ok solved it. By the way the nylon X was great. no warping, great adhesion and great shape.



  • @surfmagic In Mattercontrol, on the printer menu at right side of screen, on the "Features" tab, near the bottom, there are two parameters: "Load Filament Length" and "Unload Filament Length."

    I have not played around with them yet, but I had a similar issue going back from NylonX to Ryno - I tried to yank the filament out when it hit resistance at the extruder by releasing tension on the extruder gears, and it popped out using moderate force without doing any damage.

    Not sure if those parameters work like I think they do (piss poor documentation from Matterhackers) but maybe it's worth a try.



  • @surfmagic My pulse was spec'd to include a filament out sensor which it did not come with. However the sensor is set to on in printer settings and in mattercontrol. With those on my filament unload from mattercontrol always failed the 1st time, Doing it again always worked. Turn off the sensor in marlin and mattercontrol should solve that problem. you will need to do an m500 to save the setting in firmware. I have found that the load/unload lengths in mattercontrol do work. Load/unload on the lcd screen do not work because the matterhackers firmware has the limits set at 200. I can't currently compile it to change it though. (semi-opensource at best, with vague email responses from you know who)



  • @ibbro Matterhackers discontinued the use of the filament run out switch due to poor reliability. You can turn the feature on which activates the switch on the Azteeg board. I have the wiring diagram if needed. I printed the Matterhackers switch out. It is basically just a bearing that presses up against a microswitch. It looks cool, but it's janky. No wonder Matterhackers had a problem with it. You can buy decent filament switches for $5 on ebay and get it working.


  • MatterHackers

    @thwclw In general these settings are made for very advanced users, those building a custom machine (like you guys) or the original manufactures, that said, what would you like see improved in the documentation?

    0_1623767128808_7dbebc32-d065-4212-914c-08620a6faec7-image.png

    Setting this value will feed in or out the number of mm of filament specified. If it doesn't please let us know and we will get it fixed.


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