Any way for it to not auto-correct errors?
So I have a cylindrical lithophane .stl I created in the past using a website that generates .stls based off an image you put in. I’ve printed this .stl fine in Cura on different printers before getting my current MK3S.
However when I open the .stl file in PrusaSlicer, it was to automatically correct and fix errors, the results of these numerous manifold “fixes” being that it generates a ton of weird slim line-like walls inside the hollow area of the cylinder.
So, how can I get PrusaSlicer to not do this fixing, and to just slice the object as is? I’ve imported the MK3S profile to Cura in the meantime, but it would be nice to be able to get it working in PrusaSlicer as well instead of having to go back and forth between the two.
Thanks!
RE: Any way for it to not auto-correct errors?
Which website?
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Chuck H
3D Printer Review Blog
RE: Any way for it to not auto-correct errors?
Often it isn't the repair that causes the problem; instead it is the model itself, and thin walls become an issue. Cura is likely doing it's own repairs and fixing the thin wall issues for you. Plic3r must be told to work around them.
RE: Any way for it to not auto-correct errors?
Hmm, Cura itself didn’t fix errors I thought, isn’t that why people usually use 3D Builder or Meshmixer and other programs to fix them?
But yeah, it’s weird at any rate, this is my first go around with a slicer other than Cura, I mostly wanted to give PrusaSlicer a chance since this version was specifically made for their printers and it has worked nicely on several other models I’ve tried. Just not this one apparently because of this auto-correcting of errors that actually cause an issue when corrected 🙁
RE: Any way for it to not auto-correct errors?
Um - sorry; Plicer is doing what it should do. Making it handle a special case of malformed part designs is not going to happen. I hope.
And thin walls is not an error: it's a design issue in the part.
RE: Any way for it to not auto-correct errors?
That still doesn’t answer my question if it’s a feature that can be disabled or not...well regardless I’ll just use Cura for now. It can’t be too malformed if it’s worked fine before and printing fine now.
RE: Any way for it to not auto-correct errors?
As another idea: zip and post your STL that's giving you headaches - and detail precisely what 's happening when you use Prusa Slicer.
Pictures with arrows are a lot more informative than "these numerous manifold “fixes” being that it generates a ton of weird slim line-like walls" than is essentially meaningless because anything non-manifold generally can't be printed because by definition there are unknowable surfaces in a non-manifold part... https://en.wikipedia.org/wiki/Manifold
https://www.instructables.com/id/Non-manifolds-Your-Worst-3D-Printing-Nightmare/
RE: Any way for it to not auto-correct errors?
most lithophane creation sites allow you spec the min and max wall thicknesses you want in the stl
RE: Any way for it to not auto-correct errors?
I actually ended up solving the issue with the object, I took my own dumb advice that I posted earlier and ran it through meshmixer, which apparently solved the manifold errors and doesn’t cause PrusaSlicer to make a bunch of random thin walls. So now I feel a bit dumb in that respect 😑
So that fixed one problem, but now I’m getting a “bad allocation” error message whenever I try to slice it, the progress bar is fine right up till the end when the error message then appears. It’ll still let me export the gcode, but I don’t want to try printing it just yet in case it doesn’t work at all cause of that error.
RE: Any way for it to not auto-correct errors?
If you are getting a "bad allocation" error, then you likely are running on a computer with low RAM, or you have too many other processes running.
We should improve the error message.