PrusaSlicer Layer height always 0.2?
 
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Steeeve
(@steeeve)
Active Member
PrusaSlicer Layer height always 0.2?

Hi!

Yesterday I ordered my Mini+ and while it will be shipped just in a few weeks I wanted to get warm with Prusaslicer and tried to build a Profile for my Snapmaker A-350. 
The default layer heights for Snapmaker are 0.08 0.16 0.24. While checking, the slicer always generates 0.2 layers

For Example, when set height to 0.1 (because I thought maybe the slicer is not able to deal with a second comma)

;LAYER_CHANGE
;Z:4.6
;HEIGHT:0.2
G1 E26.29834 F2700.000
G92 E0
G1 Z4.800 F4800.000

Any clues what the Problem could be?

Thanks in advance

Kind regards

Steeeve
PS: V2.3.0.+  

Posted : 05/02/2021 9:20 am
Steeeve
(@steeeve)
Active Member
Topic starter answered:
RE: PrusaSlicer Layer height always 0.2?

Additional Information:

This does not apply when slicing for Prosa Mini:

;LAYER_CHANGE
;Z:0.35
;HEIGHT:0.15
;BEFORE_LAYER_CHANGE
G92 E0.0
;0.35

G1 Z0.350 F9000.000
;AFTER_LAYER_CHANGE

Posted : 05/02/2021 10:15 am
JoanTabb
(@joantabb)
Moderator
RE: PrusaSlicer Layer height always 0.2?

Hi Steeeve


If you use Prusa Slicer, there are a number of preset layer heights as shown in the list above
(this is for a 0.4mm (Standard) Nozzle)
If you get a larger 0.6mm nozzle you will be offered larger layer heights and if you use a 0.25mm nozzle, the list of layer heights will be reduced because the smaller nozzle cannot handle larger layer heights. 

the Prusa Printer has a different controller board / stepper motor driver setup to your previous printer, and the old 'MAGIC' Layerheights, are not an issue as they were on other printers
regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 05/02/2021 11:33 am
Steeeve
(@steeeve)
Active Member
Topic starter answered:
RE: PrusaSlicer Layer height always 0.2?

Hi. 

As I said, it is working fine with a Prusa Printer selected, but not with a custom set up printer. How can this be?

best

Steeeve

 

Posted : 05/02/2021 4:52 pm
JoanTabb
(@joantabb)
Moderator
RE: PrusaSlicer Layer height always 0.2?

Prusa have given you the ability to create profiles for almost any 3D printer, 

if you wish to have a profile for 0.24mm first layer and 1.2 mm successive layers

you can set this in your Prusa Slicer

these settings can be saved into a custom profile, for use in the future 

Steeeve TreeFrog

Clip from Gcode 
-------------------------------------

G1 X109.942 Y90.151 E2.21348
G1 X110.228 Y89.909 E2.21773
;LAYER_CHANGE
;Z:0.36
;HEIGHT:0.12
G1 Z0.360 F7800.000
M104 S210 ; set temperature
G1 E0.21773 F2400.000
G92 E0
G1 X143.756 Y91.169 F7800.000
G1 E2.00000 F2400.000
;TYPE:Perimeter

----------------------------------------
you can see that the Z axis height for layer 2 is in fact  Z0.360

I hope this helps you set up your preferred layer heights 

Magic Layer heights are based on the number of Z Motor Steps pre revolution (Usually 200), and the pitch of the Z axis lead screw (8mm),  which I believe  results in o.o4mm per step. 
the Prusa printers use microstepping which enables finer control of layer height. 

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 05/02/2021 6:01 pm
Steeeve
(@steeeve)
Active Member
Topic starter answered:
RE: PrusaSlicer Layer height always 0.2?
Posted by: @steeeve

...and tried to build a Profile for my Snapmaker A-350. 

 

That is exactly what I did...

Posted : 15/02/2021 8:52 am
bobstro
(@bobstro)
Illustrious Member
RE: PrusaSlicer Layer height always 0.2?
Posted by: @steeeve

As I said, it is working fine with a Prusa Printer selected, but not with a custom set up printer. How can this be?

Save your part & settings off in a 3MF project file, zip it, and attach it to a reply here so we can examine your settings. Otherwise, we're just guessing.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 15/02/2021 3:36 pm
Steeeve
(@steeeve)
Active Member
Topic starter answered:
RE: PrusaSlicer Layer height always 0.2?

@bobstro

Hi!

Here you go, File attached.

EDIT: I'm not allowed to attach a zip file.. Trying 3mf

EDIT2: Also 3mf not possible

An other Example that settings will not work:

 

is resulting in:

which cannot be correct.

Thanks in advance.

Kind regards

Steeeve

This post was modified 2 years ago 2 times by Steeeve
Posted : 16/02/2021 8:30 am
Neophyl
(@neophyl)
Famed Member
RE: PrusaSlicer Layer height always 0.2?

How are you trying to attach a zip file ?  I take it you are using the Attach File "Choose File" button located below the text entry field ?  I can understand it not allowing 3mf as it doesnt allow that file type but zip files are allowed. (*.zip)  not tried other archive types here though.

Posted : 16/02/2021 1:35 pm
bobstro
(@bobstro)
Illustrious Member
RE: PrusaSlicer Layer height always 0.2?

Here's what it should look like after you attach a file...

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 16/02/2021 4:27 pm
Steeeve
(@steeeve)
Active Member
Topic starter answered:
RE: PrusaSlicer Layer height always 0.2?

Yes, did it that way...

Edit: Yeah sure, and now it worked... 

Attachment removed
Posted : 17/02/2021 8:41 am
Neophyl
(@neophyl)
Famed Member
RE: PrusaSlicer Layer height always 0.2?

I opened your project file and while the print profile is called 'DemoForum.3mf (SM2 PLA 0.24)' the actual saved layer height in it was set to 0.15.  I changed the layer height to 0.24 and sliced and then checked the gcode output.  It is increasing layer heights by 0.24 as while the first layer is 0.2 (as set by the first layer height setting the next layer up was at 0.44 (G1 Z0.440) or

;LAYER_CHANGE
;Z:0.68
;HEIGHT:0.24
;BEFORE_LAYER_CHANGE
G92 E0.0
;0.68

from a later point in the gcode file.

If I change them to other heights it also slices using those heights correctly.

Also checking the slice preview and selecting height filter it also shows it using 0.24mm for layers 2+ (except for the bridging parts which are 0.4 same as the nozzle size).

 

 

BTW not related to this at all but you can tell the snapmaker profile you are using was copied from a mk3 as while the print height has been set to 350 the 'only lift z value' on the Printer Settings>extruder page is set to 209.  That means its not going to lift z on objects once they are taller than 209mm like the mk3.  For a 350mm high printer that should be set to something like 349 to match the print height.

Posted : 17/02/2021 9:15 am
Steeeve
(@steeeve)
Active Member
Topic starter answered:
RE: PrusaSlicer Layer height always 0.2?

@neophyl

Hi! Thats fun, because:

There is really something strange happening here!

Thanks for your hint - the profile was release by Stefan from CNC Kitchen

Did you try this on a Mac or on a PC - maybe the Mac is the problem?

Best

Stephan

This post was modified 2 years ago by Steeeve
Posted : 17/02/2021 9:20 am
Neophyl
(@neophyl)
Famed Member
RE: PrusaSlicer Layer height always 0.2?

@steeeve

I'm on a windows 10 pc (at work lol).  

I did just take a look at your config bundle you included in the zip file too.  That seems to have definitions for layer heights under printer and filament sections.  Now I'm not as familiar with the contents of those files as say Bob but it strikes me as strange that the Printer definition or filament definition should have a definition for layer height (as well as other settings in those sections that I wouldnt expect in there).  Thats defined in the Print Settings.

All 3 of your Printer definitions have settings in I wouldnt expect in that section.  Why does it have end filament gcode defined under printer for example ?  Basically I think the printer profiles that you are using are what is causing you the issues you are seeing.  That would be why when you switch to the mini printer profile you dont have a problem.

As a test, back up your existing configuration folders to a different location and then delete them and do a clean re-install.  Then try a system profile modified to be a different layer height or even import your own saved 3mf that you posted and see if you can then slice with the different layer height.  Personally I think theres something screwy in the profiles that is over riding it for you as you have those profiles installed. Where as I am just importing them in via 3mf which is like a temporary copy (unless saved using the disk icon).

Posted : 17/02/2021 10:23 am
Steeeve
(@steeeve)
Active Member
Topic starter answered:
RE: PrusaSlicer Layer height always 0.2?

@neophyl

Okay, thanks - this sounds like an good advice - I will try...

Posted : 17/02/2021 10:26 am
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