Why is the flow set to 95%?
In the Prusa Slicer profiles for the MINI (both IS and non-IS; also for other printers), the flow is set to 95% by using M221 S95. When I weight the objects after printing, they come out to be 95% of the desired weight, thus actually the printer is underextruding - even with Prusament.
Apparently some explaination was given here: https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-others-archive/updated-slic3r-pe-over-extrusion-and-cooling-solved/#post-58258 and apparently this was set due to overextrusion.
However, if you search the forum, there are plenty of topics asking why it is set to 95% and the answer is often "just change it to S100"...
Thus, is this really just a remnant of an old bug that was already fixed in modern firmware? Or is there any other reason why this is still in the profiles?
Best Answer by reox:
I dug around in the profiles and it seems like the MINI was never shipped with anything else than S95 (it was introduced in Version 1.0.6 and has S95 since then). The issue on github explains, that newer models do not use S95 any more and profiles are not changed for old printers: https://github.com/prusa3d/PrusaSlicer-settings/issues/147
So I conclude it is indeed a remnant of old times and will not be changed to be backwards compatible...
RE: Why is the flow set to 95%?
No one has an answer to this question? I searched for an answer in the meantime but I cannot find anything conclusive. It is really tedious if I for example use another PC to slice something and have to remember to reset that setting...
RE: Why is the flow set to 95%?
I dug around in the profiles and it seems like the MINI was never shipped with anything else than S95 (it was introduced in Version 1.0.6 and has S95 since then). The issue on github explains, that newer models do not use S95 any more and profiles are not changed for old printers: https://github.com/prusa3d/PrusaSlicer-settings/issues/147
So I conclude it is indeed a remnant of old times and will not be changed to be backwards compatible...