Fork of PrusaSlicer that enables wipe tower for mismatched nozzle sizes - HIGHLY experimental  

RE: Fork of PrusaSlicer that enables wipe tower for mismatched nozzle sizes - HIGHLY experimental

Posted by: @baconfase

Hey Nikhil thanks for keeping your fork up with the slicer versions.

Here's another issue someone has come across that I thought was already 'dealt with' but my usual tricks arn't working (messing with min/max heights in Printer Settings) so maybe I'm misremembering: First layer height can't be greater than nozzle diameter

Seems regardless of max/min layer height settings in the Printer Settings, program won't allow slicing if the first layer height is larger than any of the nozzles used in the print regardless if a nozzle is used in the first layer or not. The slicer is fine with settings if the smaller nozzle isn't used in the print at all, but once it is then no go. So I'm guessing that this error flag is related to the nozzle priming at the start of every print; might actually cause print issues at the start but I'm willing to test.

Here's a simple example print file: FirstLayerHeight-CantBeGreaterThan-MultiNozzleDiameter

Do you think you can turn this error flag off too?

Ah, screw it.  I just did it and released a special edition for you, @BaconFase.

https://github.com/DoubleStrike/PrusaSlicer-MultiTool/releases/tag/2.9.4.1

RE: Fork of PrusaSlicer that enables wipe tower for mismatched nozzle sizes - HIGHLY experimental

Test setup was with a .4 nozzle and a .25 nozzle. Default cube set to use the .25 nozzle as main with .15 layer height, except for the painted first layer to use the .4 nozzle with .3 layer height. Print went successfully.

Tried again with a first layer height of .4 on a .4 nozzle with subsequent layers of .1 on the .25 nozzle. Also successful.

Quick and dirty test prints if you want to watch it in realtime: https://www.youtube.com/live/AJbaXb2tazk?si=oMcMvyxL-uXKmJSC&t=3610

I thought the initial purge would be troublesome, but I didnt notice any issues at all. Seems skipping this check works just fine too.

Cheers Nikhil

RE: Fork of PrusaSlicer that enables wipe tower for mismatched nozzle sizes - HIGHLY experimental

Looks like variable layer heights with organic supports are another thing that can now be sliced with that code change. However, it is not one of the things that work out well:

Slices but will clearly not print well. I guess the 'synchronize with object layers' option isn't as robust as many other slicer features. When using Variable Layer Heights with grid or snug supports, the varied layer heights info is passed over to the support layers so things print correctly. The reason the slicer blocked using organic supports with Variable Layer Heights is because organic supports don't get that varied height info. So if you shrink your layer heights organic supports will end up inside your model; if you raise your layer heights the organic supports end too low to actually provide support.

Just a thing to keep in mind if using 2.9.4.1