Slicer in Inches Instead of MM?
 
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Lane
 Lane
(@lane-2)
Active Member
Slicer in Inches Instead of MM?

I don't see a way to tell Slicer that I want to work in inches instead of mm. Is there a way to do it?

Arlington, Wa, USA...
Posted : 27/04/2020 9:01 pm
JoanTabb
(@joantabb)
Moderator
RE: Slicer in Inches Instead of MM?

Not that I am aware of, 

Scale your parts by 2540%

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 : 27/04/2020 9:42 pm
Lane
 Lane
(@lane-2)
Active Member
Topic starter answered:
RE: Slicer in Inches Instead of MM?

@joantabb

Sorry but that won't work. I made them in a CAD program in inches.

I guess I'll learn to live with it if I can't change it. 

Thanks for the reply

Arlington, Wa, USA...
Posted : 27/04/2020 9:57 pm
Neophyl
(@neophyl)
Famed Member
RE: Slicer in Inches Instead of MM?

If your parts are created and exported in inches then when imported into Slicer they will be very small.  If you scale them larger In slicer using the scale option by 2540% like Joan said the parts will then be scaled correctly back to their original size. 

However it should be easy in your Cad program to export in mm instead of inches even if you are working in inches. 

Posted : 27/04/2020 10:02 pm
Lane
 Lane
(@lane-2)
Active Member
Topic starter answered:
RE: Slicer in Inches Instead of MM?

@neophyl

No, that has not been my experience at all. I've made about 3-4 parts in inches and printed them just fine. They do not scale.

Arlington, Wa, USA...
Posted : 27/04/2020 10:11 pm
Neophyl
(@neophyl)
Famed Member
RE: Slicer in Inches Instead of MM?

If when imported into slicer they don't need rescaling then the parts have been exported in mm.  

Its quite common to find stl files on thingiverse that have been exported in inches, we get 'Ive imported my part and its really small' questions often.  Its usually down to the mm/inches conversion and the fix to that is to scale up the small parts by 2540%.  

 

Posted : 28/04/2020 5:46 am
hansDaniel
(@hansdaniel)
New Member
RE: Slicer in Inches Instead of MM?

Hi, if you need some good converter from inches to meter you can look here how-many-inches-are-in-a-meter

Posted : 27/05/2021 6:04 pm
cwbullet
(@cwbullet)
Illustrious Member
RE: Slicer in Inches Instead of MM?

I am a yank also.  We need to learn metric.  I also used to design cad in inches but convert all my designs to mm.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 27/05/2021 6:43 pm
Grok
 Grok
(@grok)
New Member
RE: Slicer in Inches Instead of MM?

Put a check in the last box in the setup wizard "View Mode" section.

That may do the trick.

Posted : 28/05/2021 6:05 pm
adesir
(@adesir)
Reputable Member
RE: Slicer in Inches Instead of MM?

Please think before posting, the link was simply an ad.

Posted : 28/05/2021 6:15 pm
OroNZ
(@oronz)
New Member
RE: Slicer in Inches Instead of MM?

I'm wondering what I can do in Blender to preserve scale.

In Blender, I'm working in metrics - either in mm or m. When I export an STL from Blender and import it into PrusaSlicer I'm always given that "looks like saved in inches" dialog box.

(The dialog box isn't triggered by the object being metric or imperial - PrusaSlicer just thinks it's microscopic, and so it triggers this misleading dialog box.)

I say no, and scale up 1000%, which works... but is an erroneous workflow. Is there an import setting somewhere in PrusaSlicer that can correct for this problem?

 

Posted : 04/07/2021 9:22 pm
Steve
(@steve-3)
Estimable Member
RE: Slicer in Inches Instead of MM?

I also design in inches. The last step before saving as STL is to scale X, Y, and Z by 2.54X. My original CAD files stay in inches.

It probably would be easier to design in metric, but all my tape measures and calipers are in inches. 

 

Posted : 04/07/2021 10:17 pm
Diem
 Diem
(@diem)
Noble Member
RE: Slicer in Inches Instead of MM?

Slicer now has the option to import in imperal units.

Cheerio,

Posted : 05/07/2021 12:17 am
Area51
(@area51)
Prominent Member
RE: Slicer in Inches Instead of MM?
Posted by: @oronz

I'm wondering what I can do in Blender to preserve scale.

In Blender, I'm working in metrics - either in mm or m. When I export an STL from Blender and import it into PrusaSlicer I'm always given that "looks like saved in inches" dialog box.

(The dialog box isn't triggered by the object being metric or imperial - PrusaSlicer just thinks it's microscopic, and so it triggers this misleading dialog box.)

I say no, and scale up 1000%, which works... but is an erroneous workflow. Is there an import setting somewhere in PrusaSlicer that can correct for this problem?

In blender you can set your working scale to mm. Save the file in "File->Default->Save startup file". Next new file will automatically be set correct up for mm.

Have a look at my designs on Thingiverse or on PrusaPrinters ;)...
Posted : 06/07/2021 11:54 pm
Sp4rkR4t
(@sp4rkr4t)
Eminent Member
importing blender STL's issues

 

Posted by: @area51

In blender you can set your working scale to mm. Save the file in "File->Default->Save startup file". Next new file will automatically be set correct up for mm.

I have the defaults in blender set to metric yet every time I'm importing into prusaslicer it brings up the dialog, and it's only prusaslicer that does this behaviour superslicer is fine with Blender generated STL's.

Posted : 02/08/2021 9:55 pm
Area51
(@area51)
Prominent Member
Setting up Blender for 3D precision modeling

@sp4rkr4t

I am still a beginner in Bender, but have no issues importing and exporting in metric (mm) when creating and editing models for PrusaSlicer.
Before I could use Blender for 3D modeling, I did a setup, following "Maker Tales" (YouTube) instruction for Learn Blender 2.9+ Through Precision Modeling.
Now Blender automatically start a new project/file with the correct setting for scaling.

Have a look at my designs on Thingiverse or on PrusaPrinters ;)...
Posted : 03/08/2021 11:42 am
Sp4rkR4t
(@sp4rkr4t)
Eminent Member
I know

My blender is fine as well, it's prusaslicer and only prusaslicer that brings up the maybe this is in inches dialog.

Posted : 03/08/2021 11:48 am
Neophyl
(@neophyl)
Famed Member

Many of us using Blender and Prusa Slicer don't have any issue with scaling which does suggest that something in your Blender setup is not quite correct.  iirc as well as setting the units system to Metric you also need to set Unit Scale to 0.001 and then Length to Millimetres to actually get millimetres when modelling and exporting.

I think blend files are sort of self contained a bit like PS 3mf files so the settings are stored in the blender file.

Load the attached blend file of a 20mm cube and export it then load the stl into PS and see what you get.

Posted : 03/08/2021 11:58 am
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