Finishing reply - just reprinted the cube with 170° (sliced with Cura 5) - the "e" stuck a bit better (it left a mark when I pried it off), but the whole cube itself easily separated when I pulled it apart.
So I blame the filament, I was never that happy with it to begin with.
Very likely I'm also doing something wrong, but I don't think it's worth the time to investigate further. I don't plan on buying it again.
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GregValiant 1,342
The model has errors. When you load the STL does the "Not Watertight" warning come up?
After looking at your slice and then slicing it myself I thought you may have uploaded a different model.
Here the model on the left has been repaired and the model on the right is the one you uploaded. I don't have your settings (you can pass them along but using the "File | Save Project" command and posting the 3mf file).
This is the layer before the "e".
In this one I added a model repaired at https://formware.co/OnlineStlRepair. It's the left bottom one. All three models sliced differently which is bizarre in itself.
So it looks like there are some disconnects in the model. I used MS 3D Builder to repair the left top model but none of the models look right to me. Although TinkerCad is fussy about how the surfaces go together and which side should face outside (see Inverted Faces in the report), this problem seems a bit different.
I don't know if that directly has anything to do with your adhesion issue but as you can see my slices look different than yours. This was a .4 nozzle at .2 layer height. I went down to a .05 layer height and the slicing was pretty much the same.
Regarding having Cura inset the "e" deeper into the model, no. That's a CAD operation. If the "e" was a separate model then it could be inset further.
Here is the repair report:
--> 0 Naked edges (?)
--> 0 Planar holes (?)
--> 0 Non-planar holes (?)
--> 14 Non-manifold edges (?)
--> 23 Inverted faces (?)
--> 2 Degenerate faces (?)
--> 0 Duplicate faces (?)
--> 0 Disjoint shells (?)
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Rejutka 4
There is no message from Cura - is it possible that I deactivated it somehow?
Here's the settings:CE3PRO_ScrabbleDice.3mf
So maybe I messed them up somehow.
What's weird is that I printed the same design with a different material (ProtoPasta Iron Pla) and the letters seemed to stick better.
And like I added in my edit, with 170 it seems to stick better as well (still have to try printing the whole cube, though).
I guess part of the problem is that the whole design is somewhat complex - lots and lots of little separate forms that are joined together, usually not all at once.
Maybe I should unlink everything and join it again all at once.
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