My prints are all garbled. Seems like a heating or calibration issue, but have reran diagnostics successfully
 
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My prints are all garbled. Seems like a heating or calibration issue, but have reran diagnostics successfully  

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Doogles
(@doogles)
New Member
My prints are all garbled. Seems like a heating or calibration issue, but have reran diagnostics successfully

Hi,

Got my new mk3. I managed to successfully print from SD card out of box. Went great. Powered down and did a firmware update from my PC. Now it just prints and does not adhere to the surface plate. The fans all work, selftest checks out, calibration has been redone and latest firmware checks out. All seems in order, except the prints. I have attached a video of the prusa logo test. Hopefully missing something obvious but curious what that is?

Thanks,

David.

This topic was modified 1 month ago by Doogles
Posted : 21/09/2021 8:20 pm
JoanTabb
(@joantabb)
Moderator
Live Z adjustment required.

Hi David. 
from the image, it looks like your live Z is too high

Try re adjusting it. 

I use this process

https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/life-adjust-z-my-way/

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 21/09/2021 11:11 pm
Dan Rogers
(@dan-rogers)
Noble Member
Poster child right there

I think that print is a perfect example of "calibration did not get completed correctly".  Calibration has three stages now - first is rough "get the pinda sensor close enough for moving foward", the second is "run a calibration" where it moves the head around and does a bunch of x y and Z moves.  That gets it close enough to try the third step - adjusting your starting Z.

This third step may need to be repeated if you ...

reflash and have to do a factory reset (forgets the previous sheet specific settings)

change to a different steel sheet (profiles are for this)

Change filament brands

Change filament color

See round strands like your picture.

You need to get your intial Z correct by the time the first layer completes.  On most prints that's plenty of time to figure out if your Z and your print are set up to work well.  At the outset though, people think that running calibration is the end of things - but do follow the article that Joan posted very closely - when the extrusions are FLAT versus round as in your picture, you are getting close.

 

Posted : 23/09/2021 8:21 am
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