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Need help troubleshooting your BoXZY 3D Print Head? You're in the right place!

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Filament jammed, unable to remove Bowden tube

This is just the second print job I’ve attempted. I had to kill it because the filament was not extruding even though the drive was spinning.

With the extruder heated, I am unable to manually advance or retract the filament. I also cannot remove the Bowden tube by simultaneously pushing down on the collar and pulling up on the tube (I have never tried to remove it before either).

This is a Kickstarter version Boxzy in case that makes a difference.

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I'll need a few details to help you. What brand and type (PLA, ABS, etc) of filament are you printing with?

Which setting have you chosen for your print?

Does the nozzle remain near the expected temperature when attempting to extrude?

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I am using a no-name 1.75mm PLA I bought from eBay, probably similar to this:

I used the same settings as my first print job, which completed successfully after I sorted out the nozzle height. I had the extruder temperature at 200. Here are some screenshots for my slic3r config:

I observed the first layer of the print job and it appeared to be going fine, but I wasn’t watching the temperature gauge for the extruder. It wasn’t until I came back later that I saw the filament had stopped advancing. The extruder does still heat up at this moment.


You may have one of the early defective nozzles. If you remove the filament tube connector on the nozzles cold end and see bunched up filament, that's what is happening. I would personally try a higher temperature before disassembling the nozzle, however. I personally use 220c for ebay filament. Sometime impurities in cheap filament cause blockages.

Disassembling and Reassembling Printhead for Inspection or Maintenance

Disassembling and Assembling 3D Printer Nozzle


Thanks for those resources. I was able to unhook the bowden tube with a little more gumption and some hand tools. Heating to 220 didn’t make the filament budge, so I went in and opened up the print head. The following photo shows the filament balled up inside the nozzle-side filament holder. Is this indicative of the defective early nozzles? Does BoxZY offer any support on this beyond selling an updated nozzle?


That appears to be one of the problem nozzles. Boxzy will install your new nozzle, if you send them your canister. Unfortunately, your warranty would have ended quite some time ago.


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