Printer just skipped a feature that exists in the sliced model???
 

Printer just skipped a feature that exists in the sliced model???  

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KarmaPolice
(@karmapolice)
New Member

I'm very confused... my model has a "nub" at a certain height, and PrusaSlicer did a fine job of slicing it. I exported the g-code and ran the print, however when the printer got to that height it didn't even try to print the nub... I don't mean it failed, I mean it printed a nice smooth wall, no protrusion at all... 

I'm stumped... any thoughts? I've attached images from slicer and the resulting print (since I can't seem to upload 3mf or g-code files). I also viewed the g-code in the g-code viewer and it looks correct (with nub) there.

This topic was modified 3 months ago by KarmaPolice
Posted : 22/01/2021 4:02 am
jsw
 jsw
(@jsw)
Noble Member

It looks like it's trying to print over air.  You will need to use a support.

Posted : 22/01/2021 2:10 pm
Dan Rogers
(@dan-rogers)
Reputable Member

Compared to the size of your nozzle, how big is the nub?  Another question - what was your layer height relative to the size of the nub?  Items smaller than the nozzle or that are smaller than the layer height often just vanish.

Posted : 22/01/2021 3:59 pm
Swiss_Cheese
(@swiss_cheese)
Honorable Member

can you post a Zipped up .3MF of the project file in question? If so make sure it has all the settings you used when slicing at the time.

 

This post was modified 3 months ago by Swiss_Cheese
Posted : 23/01/2021 4:30 am
KarmaPolice
(@karmapolice)
New Member

Bottom_HighDetail

Here's the zip of the 3MF file

Posted : 25/01/2021 6:45 pm
Swiss_Cheese
(@swiss_cheese)
Honorable Member

Is this the feature your referring too? the one suspended in mid air and not connected in any way to the model?

 

😉

Posted : 25/01/2021 7:47 pm
Swiss_Cheese
(@swiss_cheese)
Honorable Member

In all seriousness though, if you reconnect the piece in question your still going to have an issue with the lower layers of the feature. they will need to be supported or re-oriented to print properly.   

Posted : 25/01/2021 7:53 pm
KarmaPolice
(@karmapolice)
New Member

@swiss_cheese

Thanks for this, hadn't noticed it wasn't connected... lol... stupid STL coming in i guess... *sigh* will go figure that out... and yes, i expected the support being needed

Posted : 25/01/2021 8:13 pm
Swiss_Cheese
(@swiss_cheese)
Honorable Member

Your very welcome, and I would consider possibly making another hole in the area where the Nub is and then printing the Nub as a separate piece and adding detents to the Nub to lock it in place, of course there is the glue option as well but glues tend to let loose after awhile especially where PETG is concerned.

Good Luck

Posted : 25/01/2021 8:45 pm
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