Object levitates above the platform after slicing for SL1

[davidkerny]

2.3.3 Windows 10

Object keeps levitating above the platform. When printing the exported file, printer doesn't print anything for the first few layers.

EVA.zip

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Operating system type + version

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3D printer brand / version + firmware version (if known)

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Behavior

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• Expected Results
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Project File (.3MF) where problem occurs

Upload a PrusaSlicer Project File (.3MF) (Plater -> Export plate as 3MF for Slic3r PE 1.41.2 and older, File -> Save / Save Project for PrusaSlicer, Slic3r PE 1.42.0-alpha and newer)
Images (PNG, GIF, JPEG), PDFs or text files could be drag & dropped to the issue directly, while all other files need to be zipped first (.zip, .gz)

[bubnikv]

We had a lengthy discussion in house. We agree the current behavior is not ideal, it is non-intuitive why the object is elevated while there is no support point placed on its bottom.

We can detect such a situation, where the object would better be printed on the print bed: It's bottom is flat and large, there are no support points placed on the bottom of the object. We may stop the slicing process and provide a notification explaining why the object was elevated (you have no pad selected, we should likely change the label of this choice to something like "no pad, elevated on supports") and that one should switch to "object not elevated, pad around object". We can make a hyperlink on such a notification switch to "object not elevated, pad around object" automatically. Would that work for you?

BTW you can switch to "pad around object" manually. Will that work for you?