3 ms·

I wiped the computer used for this whole ago, but the models are probably on the cloud somewhere. My problem was that the produced STL had some errors that wer

I wiped the computer used for this whole ago, but the models are probably on the cloud somewhere. My problem was that the produced STL had some errors that were hard to see but definitely showed up in prints, for example a wall section could be missing.

serf 6y ago
are you certain the STL stage had the error? In the 3dp discords i'm a part of it seems that i'm continually reminding everyone that slicer features are usually the culprit. Features like 'detect thin walls', 'ensure vertical thickness' and 'extra perimeters if needed' can and will very quickly ruin a print where the STL is error-free. That said, one can accomodate these features by modifying the STL so that the slicer transformation occurs in such a way that allows a usable product, but as far as where the error is introduced, 9 times out of 10 it's the slicer. What should happen is that the slicer should err out to the user when the shape of the end product is predicted to be radically different than the request, but I haven't ran into such features yet. Most slicers just happily try to print stuff that is physically impossible to do, and might be radically different than the shape of the STL -- usually resulting in a plate of spaghetti if you're using an FDM machine.
sitkack 6y ago
Your slicing software should warn you if the model is non-manifold. https://www.instructables.com/id/Non-manifolds-Your-Worst-3D-Printing-Nightmare/ https://www.instructables.com/id/Non-manifolds-Your-Worst-3D...
- panpanna 6y ago
  Yeah, but there question is why fusion360 created such files. Similar designs in other tools worked just fine. I've some years of experience with CAD and know often what causes such issues but in the case of fusion360 I just couldn't figure out why this happened - in sometimes extremely simple models. I haven't used fusion360 for about a year so maybe they have fixed the bugs now.

serf 6y ago

are you certain the STL stage had the error? In the 3dp discords i'm a part of it seems that i'm continually reminding everyone that slicer features are usually the culprit. Features like 'detect thin walls', 'ensure vertical thickness' and 'extra perimeters if needed' can and will very quickly ruin a print where the STL is error-free. That said, one can accomodate these features by modifying the STL so that the slicer transformation occurs in such a way that allows a usable product, but as far as where the error is introduced, 9 times out of 10 it's the slicer. What should happen is that the slicer should err out to the user when the shape of the end product is predicted to be radically different than the request, but I haven't ran into such features yet. Most slicers just happily try to print stuff that is physically impossible to do, and might be radically different than the shape of the STL -- usually resulting in a plate of spaghetti if you're using an FDM machine.

sitkack 6y ago

Your slicing software should warn you if the model is non-manifold. https://www.instructables.com/id/Non-manifolds-Your-Worst-3D-Printing-Nightmare/ https://www.instructables.com/id/Non-manifolds-Your-Worst-3D...

panpanna 6y ago
Yeah, but there question is why fusion360 created such files. Similar designs in other tools worked just fine. I've some years of experience with CAD and know often what causes such issues but in the case of fusion360 I just couldn't figure out why this happened - in sometimes extremely simple models. I haven't used fusion360 for about a year so maybe they have fixed the bugs now.