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Missing layers after prepare for print?
Posted: Sat Sep 17, 2016 3:53 pm
by guti
Hey guys,
Might be me just missing something but I think the model I'm trying to print got some missing layers:
(Could it be a problem in the STL? (got it from
https://www.thingiverse.com/thing:763622))

Re: Missing layers after prepare for print?
Posted: Sat Sep 17, 2016 5:06 pm
by parallyze
Are you setting up a multi color print or why are you using the multipart model? Does the other model (3dbenchy.stl) slice correctly?
Try the option to "Merge all outlines into a single solid model". You will find this under "Slicing Behavior", which is located on the "Advanced Tab" of your FFF settings.
Re: Missing layers after prepare for print?
Posted: Sun Sep 18, 2016 6:14 am
by CompoundCarl
I've printed a lot of those 3D benchys and never noticed a problem slicing with S3D. So maybe it's one of your settings? Can you post your factory file?
Re: Missing layers after prepare for print?
Posted: Sun Sep 18, 2016 10:00 am
by guti
parallyze - Other model is indeed slicing correctly, not sure what the difference is.
CompoundCarl - I attached my FFF profile, but since the other .stl file slices correctly it's probably the model file, just can't figure what's wrong with it.
Re: Missing layers after prepare for print?
Posted: Sun Sep 18, 2016 10:56 am
by parallyze
I don't know what the multipart-complete file is there for. But have a look at this:
http://www.3dbenchy.com/3dbenchy-for-du ... -printing/
The one you're trying to print is all of those 17 objects together in one file. But that
means it has a lot of walls very close to each other while the simple STL file just has
"outer borders". Basically you're trying to print each part on it's own - but all at once
and very, very close together.
Have you tried the Slicing Behavoir options? Creating a single solid model should
slice properly.
Re: Missing layers after prepare for print?
Posted: Sun Sep 18, 2016 11:49 am
by parallyze
Sometimes a picture is worth a thousand words

This is the multi-part STL you're trying to print. The slicer knows the window frame and the surrounding wall are different objects, each with it's own outer shell. But there is no gap/spacing defined between them. And even if the slicer could handle this without errors (which it can if the slicing behaviour is adjusted) - the walls would be way too close to each other to take the final print apart.
Here's the simple STL sliced, have a look at the window:
bye,
parallyze
Re: Missing layers after prepare for print?
Posted: Sun Sep 18, 2016 11:53 am
by parallyze
btw: You will see the same problem on plenty of other meshes. Especially figurines, where sometimes the
people export the whole body mesh with teeth and tongue... although the mouth is closed. Same problem
on a littler smaller scale.
Re: Missing layers after prepare for print?
Posted: Sun Sep 18, 2016 12:01 pm
by dkightley
Carl requested your factory file......not the profile settings.
Save factory file on
File dropdown.
The file suffix will be
.factory
EDIT..
Even better, see this thread:
viewtopic.php?f=9&t=4792&hilit=missing+layers
Best to run your copy of 3dbenchy through the online model repair service.....
https://netfabb.azurewebsites.net/
Re: Missing layers after prepare for print?
Posted: Mon Sep 19, 2016 8:26 am
by guti
Ah sorry,
Started using S3D only two days ago still learning things
Thanks for all the help!