"Autogenerated support" question  

RE: "Autogenerated support" question

Cant see an image, just a small box that says "screenshot".

RE: "Autogenerated support" question

Hope this helps

RE: "Autogenerated support" question

And the screenshot

RE: "Autogenerated support" question

I know it is obvious but sometimes thats what is needed. If you are using Prusa Slicer check supports are turned off in top right menu.

RE: "Autogenerated support" question

Sure it is turned out together with auto "generated support" below it. And still the "support" is added in the print and I can see it in Prucerslicer too. If not, it would have been easy to solved as problem.

RE: "Autogenerated support" question

As I said, it's obvious; but I've seen people waste ages after missing the obvious.

It's difficult to diagnose this sort of issue from a couple of photos, best thing to do is post a 3mf file, so people can see what is happening in the slicer. You cannot attach a 3mf directly, you need to zip it first.

RE: "Autogenerated support" question

Thanks here is the zip file

RE: "Autogenerated support" question

Sorry, that's the GCode file, I suggested attaching a 3mf

RE: "Autogenerated support" question

Yes sorry, here it is.

RE: "Autogenerated support" question

OK, I've had a look at it and I think what you are interpreting as support is not a support, I believe it is a horizontal bottom surface within the slicer. I know it is not actually horizontal but it is less than 45 degrees so closer to horizontal than vertical. If look at the colour key for the gcode you have four colours, yellow and orange are your vertical walls, purple is your floor and I have no idea what green is I cannot even see it in the model but it is so small I think we can safely ignore it. If you look at the second photo you linked which was showing a close up of the support it is purple the same as the floor.

I could be completely wrong here but that's what it looks like to me. Might be useful if someone else has a look as well if there is anyone else in this thread

RE: "Autogenerated support" question

Thanks.

So if you are right, and I have no reason to believe you are not, the questions must be: how does "horizontal bottom surface" end up as anything but horizontal, on a almost vertical wall. There are four of them.

It could come from the fact that the present model is cut out of another model where those part of the model actually were more horizontal than vertical.

So why does PrusaSlicer 2.7.4. not correct for such "artifacts" in the present model, and more importantly, how do I correct it when it is not done slicing it with suppressing "support material" ?

RE: "Autogenerated support" question

Its solid infill.  There are open issues about it on github. As well as threads on the forum here.  Its where it 'thinks' the wall needs to be thicker due to some slight slope.

One of the github issues https://github.com/prusa3d/PrusaSlicer/issues/10102 for example.  
Please see https://forum.prusa3d.com/forum/prusaslicer/removal-of-solid-infill-on-a-part-with-zero-infill/#post-681172   for a workaround that can in many cases be used.

RE: "Autogenerated support" question

Thanks. I will look into those.

RE: "Autogenerated support" question

I don't think you need to worry about it, the slicer is just interpreting those bits as horizontal rather than vertical, the only difference will be it will use 10 shells rather than 9 as those are the figures you set in the print settings but in practical terms it will make no significant difference, those four patches will be slightly thicker than the rest but you are unlikely to notice and someone else not involved in the manufacture would have next to zero chance of see it.

If you think it is going to make a noticable difference (I don't), then if you set both horizontal and vertical shells to 9 then all but one disappear which would give you less to worry about. Or failing that go back to the source model and hollow the shape out in there, the shell command in Fusion 360 should do it

RE: "Autogenerated support" question

Thanks, 

I will go to 9 or 8 perimeters and see the results.

I notice a remark in the "github.com/prusa3d/PrusaSlicer/issues" debate, that   such "Unwanted solid infill still impossible to remove, since years ... Again and again ."

I will follow that discussion hoping that the issue will be solved.

Thanks again.