Always enjoy seeing the post in this group. First time asking a question and I’m fairly new at this. I’ve had good success on smaller items before and thought I would try this ambitious print below. But as you can see I encountered some problems during the print while I was away. Any ideas on what would cause the problems in the picture below? Primarily with the “actuators” and supports? I’m letting the print finish to see if there are other problems, but will try to add another picture of the other side which is similar. I’m running the latest version of Cura, PETG, on a Mecreator2, cooling fan on 100%, nozzle temp at 235, bed at 84. The rest of the skull and base looks “reasonably” good. there are a couple of horizonal lines in there too. But some parts of it turned out better than expected which makes the failing of the jaw and neck actuators more disappointing. Thanks for any helpful suggestions/thoughts.
A front view. I wonder if this may be a slicer issue? missing/deleted image from Google+
it seems you don’t have supports below the overhangs. esp. at the actuatoirs for the jaw, it seem there are supports needed, because you have tried to print in thin air. this seems to cause your problems.
I can see why you would say that, but the interesting thing is that this model from thingiverse (credit to the creator: https://www.thingiverse.com/thing:438789) actually already had supports built in and was said to need no further supports. But some of the supports didn’t print at all, some collapsed. I still hope to post a left side picture, but in the second picture above, you can see some of the little supports under the jaw on the left side. So, even that is a mystery as to why they didn’t print too. Thanks for offering help Christian!
Last time I printed this I had to reapair the file, there were some issues where you have gaps. Check the gcode preview and make sure it’s actually telling the printer to print there.
@Scott_Sisk if you give me a link to the model i can check it. at first glance this model needs a lot of supports (even if the creator claims otherwise). but i might be wrong.
Did you shrink the model?
If so, thinner supports can “vanish” if they become smaller than your nozzle size when slicing.
Yes, I scaled it down to 160mm tall to fit my machine. Maybe that’s a problem?
@Christian_Schulz Thanks. I posted it just above in my comment above your reply. Thanks for looking into it!
@Adam_Steinmark Thanks. I will try to do that. I’m a bit of newbie, but I think I can figure that out. Thanks for the idea Adam.
@Jason_McMullan My nozzle is a .4mm . But I did the perimeter/wall at 1.5. I wonder if that relates?
Here’s the left side and some other views. missing/deleted image from Google+
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Those sparkling reflections make it look rough but the main body and surface turned alright. Just the built in supports and actuators are gone or in pieces.
@Scott_Sisk two questionis are to be answered 
did you shrink the model? do you have a link to the model? so that we can see how it is been made? (the model might be crap).
@Christian_Schulz Yes I shrunk it from 100 percent to 92.5 percent to fit my machine’s maximum build height of 160mm. Here is the link :
Assuming you’re using Cura 3, to view the gcode preview simply slice the model then in the top right of the model view window change the dropdown arrow from “Solid view” to “Layer view” and look at where the printer screwed up. Screenshots of this might help, or simply sharing the .gcode file you printed.
It seems the scaling didn’t cause the errors.
by referencing your print to the model i would assume the integrated supports got bad layer adhesion at exactly the same layers that show the weird horizontal defects in the main skull. These badly adhering “pillers” then got pushed over by your nozzle.