Diagnosing New Onset Heat Creep Jams on Slice Magnum  

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chocki
(@chocki)
Prominent Member

Yes, first thing I did after having strange issues in much earlier prior firmware updates. Oh seems so long ago now, but I did have some strange values when first running the belt calibration routine which makes me think the factory reset did not actually clear everything down and had some strange stuck in a menu yes no loop as if button stuck during initial Factory setup run.

I'll try another factory reset, but I would have expected the first one to manage just fine. But then again!....

The printer is working!, so I may just leave it and continue trawling through the code until I find the section I need and see exactly what is supposed to occur during the belt test routine. It says self test failed, but works perfectly!. (It's my slight OCD that is the real issue 😉 )

Normal people believe that if it ain’t broke, don’t fix it. Engineers believe that if it ain’t broke, it doesn’t have enough features yet....
Posted : 04/06/2020 9:52 pm
guy.k2
(@guy-k2)
Noble Member

Over 24 hours of continuous printing PC at 300C without a hitch. 

Next, convert printer back to PETG and test a long PETG print.

Posted : 05/06/2020 7:41 pm
guy.k2
(@guy-k2)
Noble Member

Converted back to PETG printing by...

1. Running 30 cm eSun cleaning filament at 285C

2. Nozzle tip manually cleaned of PC residue.

3. Change to my usual TeKKIINNG textured PEI plate for PETG.

Multi-hour PETG print underway. Fingers crossed.

 

Posted : 05/06/2020 11:16 pm
guy.k2
(@guy-k2)
Noble Member

luvology I was thinking more about what your Bondtech extruder and my BNBSX might have in common. Whereas I found a problem at my reduction gear that would make it harder for my extruder motor to move filament, there is another thing to look for beyond just a simple loose set screw.

Might be worth checking how well your Bondtech drive gear groove is aligned with the filament path. It's possible that its set screw is tight, but the drive gear is not well positioned on drive shaft. That would increase filament friction and create similar issues.

 

Posted : 06/06/2020 12:13 am
guy.k2
(@guy-k2)
Noble Member

Three hours into PETG print and no jamming. It would typically fail about 1-2 hours into a print when printer was "sick."

 

 

Posted : 06/06/2020 1:52 am
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