prusaslicer 2.1.1 adding .1mm in layer height to gcod  

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

Many questions to answer first:

1. What is your desired layer height?
2. Is the extra 0.1mm on every layer or only the first?
3. What is your configured first layer setting in Plicer?
4. If you can please export your model and settings as a .3mf file (File/Save Project). Zip the file and attach here.
5. What printer are you trying to print on? (Just realized this is the forum area for the Plicer program, and should be printer model agnostic.)

This may not apply to you, but if you are trying to print all layers with 0.05mm height on a MK3S, the first 3 layers will be printed on top of each other at 0.15mm displayed on the printer. Plicer will show them as individual layers... This is because the firmware has a hard 0.15mm height that it won't print lower than.

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

It might also be worth comparing the extrusion multiplier being used in each slicer.

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

Posted by: @sembazuru

Many questions to answer first:

1. What is your desired layer height?
2. Is the extra 0.1mm on every layer or only the first?
3. What is your configured first layer setting in Plicer?
4. If you can please export your model and settings as a .3mf file (File/Save Project). Zip the file and attach here.
5. What printer are you trying to print on? (Just realized this is the forum area for the Plicer program, and should be printer model agnostic.)

This may not apply to you, but if you are trying to print all layers with 0.05mm height on a MK3S, the first 3 layers will be printed on top of each other at 0.15mm displayed on the printer. Plicer will show them as individual layers... This is because the firmware has a hard 0.15mm height that it won't print lower than.

I'm printing at .2mm layer height.  Where I am seeing the layer height issue is when I import the gcode into duet wifi web interface.  All Prusa Slicer outputs show up as .1mm taller than other slicers. I can also see this as the first layer is smashed.  It seems like the first layer is printing at .1mm and then the rest adjust to .2mm.  I can't seem to find a place to attached the project.  

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

project

Let's see if adding media works.

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

Posted by: @mmligeza

It seems like the first layer is printing at .1mm and then the rest adjust to .2mm. 

You can set the 1st layer height separately from the others in Print Settings. I'd expect total height generated by the slicer to be correct though. Have you inspected the sliced part in PrusaSlicer's preview mode to see if the difference shows there?

I can't seem to find a place to attached the project.  

You need to zip the file, then attach it to your post.

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

Preview does show it as 4 mm vs Duet showing it as 4.1 mm.  I didn't even think to look there.  I wonder if this is a bug with Duet firmware.  It just caught my attention in the web interface, and I've noticed that my first layers have been smashed down (wider) than the other layers.  

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

Posted by: @mlaustin6

project

Let's see if adding media works.

Yep, that worked!

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

Posted by: @mlaustin6

Preview does show it as 4 mm vs Duet showing it as 4.1 mm.  I didn't even think to look there.  I wonder if this is a bug with Duet firmware.  It just caught my attention in the web interface, and I've noticed that my first layers have been smashed down (wider) than the other layers.  

Have you measured the part with calipers? Some variation is to be expected, but it should be close. Compare and measure prints from PrusaSlicer to that generated from gcode generated by your other slicer(s).

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

If the Plicer sliced object shows with the bottom squished more than others, than why is it taller? Wouldn't squishing the first layer make it shorter? Either you are getting confused in your explanation, or there is something else going on that you haven't quite grocked.

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

Thanks for the replies.  I'll poke around a bit more and try to figure things out.

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

I wanted to post some observations.  There is an issue going on with .1mm zhop while retracting enabled.  This is what is making my prints be an extra .1mm taller.  While the preview shows the correct height, the file is actually being generated with 1 more layer.  For example, a 4mm print is showing as 4.1mm with 21 layers at .2mm layer height.  It should be 20 layers.  The first layer seems to be printed at .1mm, which makes the base of my print wider than the rest. 

I've posted this on the Duet forum, and the zhop was identified as possible issue.  So I do not think this is an issue with Duet but an issue with Prusa Slic3r.  Does anyone have any suggestions?

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

What first layer height do you have set?

RE: prusaslicer 2.1.1 adding .1mm in layer height to gcod

.2mm, same as all the layers.