3D-print toolbox #104540

New Issue

George Solodkov · 2023-04-11T22:51:39+02:00

George Solodkov commented

2023-04-11 22:51:39 +02:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1660 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 517.48

Blender Version
Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: rBcc66d1020c3b
Worked: (newest version of Blender that worked as expected)

Addon Information
Name: 3D-Print Toolbox ()
Author: Campbell Barton

Short description of error
3D-print toolbox export scale incorrect

Exact steps for others to reproduce the error
Everytime i export any object that have right dimensions and opened in 3d print prog like Cura its scale is about 100000% to get real measures
For example this is 26mm piece, not a 0,026 like it is after export

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1660 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 517.48 **Blender Version** Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: `rBcc66d1020c3b` Worked: (newest version of Blender that worked as expected) **Addon Information** Name: 3D-Print Toolbox () Author: Campbell Barton **Short description of error** 3D-print toolbox export scale incorrect **Exact steps for others to reproduce the error** Everytime i export any object that have right dimensions and opened in 3d print prog like Cura its scale is about 100000% to get real measures For example this is 26mm piece, not a 0,026 like it is after export

net hook.stl

201 KiB

George Solodkov added the

labels 2023-04-11 22:51:39 +02:00

Jonathan Wells commented

2024-02-24 21:57:42 +01:00

Meter to millimeter conversion error?

Jonathan Wells commented

2024-03-13 20:49:30 +01:00

Does Blender 4.0 have the same issue?

Cedric Steiert commented

2024-07-01 00:43:23 +02:00

Does Blender 4.0 have the same issue?

Yes and no. Seems to be a technical limitation of STLs

https://blender.stackexchange.com/a/7543:

Apparently, STL's do not have a unit. However, the program interpretating the STL gives it units. In my case Cura and Netfabb both interpretate my STL as mm. This would explain why I always saw the same size (unitless). Because of this, I should also create models in mm's, so I do not have to worry about Scale on STL export.

To prevent any further confusion set blenders unit system to None and enter the dimensions of the model you wish to have in your other program, e.g. 20 for 20cm. Or if your other program works with mm use 200 for 200mm (=20cm). Alternatively adjust the scale factor in the export settings (example: Set Blender in metric mode. Don't touch the scene scale. When export to .stl set the scale to 1000 (in the export menu)).

In my opinion this should maybe be added to the documentation.
I added a proposal on right click select, may try to implement it in the future: STL format: Quick select target unit system

> Does Blender 4.0 have the same issue? Yes and no. Seems to be a technical limitation of STLs https://blender.stackexchange.com/a/7543: > Apparently, STL's do not have a unit. However, the program interpretating the STL gives it units. In my case Cura and Netfabb both interpretate my STL as mm. This would explain why I always saw the same size (unitless). Because of this, I should also create models in mm's, so I do not have to worry about Scale on STL export. To prevent any further confusion set blenders unit system to None and enter the dimensions of the model you wish to have in your other program, e.g. 20 for 20cm. Or if your other program works with mm use 200 for 200mm (=20cm). Alternatively adjust the scale factor in the export settings (example: Set Blender in metric mode. Don't touch the scene scale. When export to .stl set the scale to 1000 (in the export menu)). In my opinion this should maybe be added to the documentation. I added a proposal on right click select, may try to implement it in the future: [STL format: Quick select target unit system ](https://blender.community/c/rightclickselect/V52O/)

Mikhail Rachinskiy commented

2024-07-01 17:16:29 +02:00

Closing since 3D Print Toolbox was removed from Blender, if issue is still present report it in add-on repo issue tracker: https://projects.blender.org/extensions/print3d_toolbox/issues

Mikhail Rachinskiy closed this issue

2024-07-01 17:16:30 +02:00

Blender Bot added

and removed

labels 2024-07-01 17:16:32 +02:00

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