Unit scaling of 3D Print Toolbox doesn't work correctly #51013

New Issue

David Nottebohm-Knochenhauer · 2017-03-20T19:11:23+01:00

2017-03-20 19:11:23 +01:00

System Information
Win7, Radeon HD3650

Blender Version
Broken: 2.78c Hash: e92f235283

Short description of error
If Unit setting is used in scene settings the resulting .STL export isn't scaled correctly

Exact steps for others to reproduce the error

use standart cube scene
go to scene settings and set unit preset to "centimeters" (Metric, Unit Scale: 0.0100)
export the cube as .stl using the 3D Print Toolbox with scene scale setting enabled
check the file with OpenSCAD or Netfabb free and find the cube to be 0.02mm instead of 20mm
repeat for other scalings

UnitCube3DToolboxblend.blend

**System Information** Win7, Radeon HD3650 **Blender Version** Broken: 2.78c Hash: e92f235283 **Short description of error** If Unit setting is used in scene settings the resulting .STL export isn't scaled correctly **Exact steps for others to reproduce the error** - use standart cube scene - go to scene settings and set unit preset to "centimeters" (Metric, Unit Scale: 0.0100) - export the cube as .stl using the 3D Print Toolbox with scene scale setting enabled - check the file with OpenSCAD or Netfabb free and find the cube to be 0.02mm instead of 20mm - repeat for other scalings ![UnitScaleSetting2.png](https://archive.blender.org/developer/F516814/UnitScaleSetting2.png) ![UnitScaleSetting.png](https://archive.blender.org/developer/F516816/UnitScaleSetting.png) [UnitCube3DToolboxblend.blend](https://archive.blender.org/developer/F516813/UnitCube3DToolboxblend.blend) ![netfabb Basic 7.4 - untitled-Cube.fabbproject.png](https://archive.blender.org/developer/F516820/netfabb_Basic_7.4_-_untitled-Cube.fabbproject.png)

David Nottebohm-Knochenhauer commented

2017-03-20 19:11:23 +01:00

Changed status to: 'Open'

David Nottebohm-Knochenhauer commented

2017-03-20 19:11:23 +01:00

Added subscriber: @mail-2

Bouchard Guillaume was assigned by Aaron Carlisle

2017-04-16 21:38:10 +02:00

Aaron Carlisle commented

2017-04-16 21:38:10 +02:00

Added subscribers: @ideasman42, @BrendonMurphy

Don Karns commented

2019-01-06 05:43:52 +01:00

Added subscriber: @dddman

Don Karns commented

2019-01-06 05:43:52 +01:00

i made 3d objects in blender and exported to stl file and opened in cura for lulzbot. the object printed pretty much is exacly 2 times the size it should be

Jon McKay commented

2019-02-08 03:47:46 +01:00

Added subscriber: @JonMcKay

Jon McKay commented

2019-02-08 03:47:46 +01:00

In #51013#594593, @dddman wrote:
i made 3d objects in blender and exported to stl file and opened in cura for lulzbot. the object printed pretty much is exacly 2 times the size it should be

Question - Did Cura have "Automatic scaling for small objects" turned off?
Just a sanity check.

> In #51013#594593, @dddman wrote: > i made 3d objects in blender and exported to stl file and opened in cura for lulzbot. the object printed pretty much is exacly 2 times the size it should be Question - Did Cura have "Automatic scaling for small objects" turned off? Just a sanity check.

Bouchard Guillaume was unassigned by Dalai Felinto

2019-12-23 16:36:45 +01:00

Dalai Felinto commented

2019-12-23 16:36:45 +01:00

Added subscriber: @guillaum

Bastien Montagne commented

2020-02-17 16:58:13 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2020-02-17 16:58:13 +01:00

Changed status from 'Confirmed' to: 'Archived'

Bastien Montagne closed this issue

2020-02-17 16:58:13 +01:00

Bastien Montagne self-assigned this 2020-02-17 16:58:13 +01:00

Bastien Montagne commented

2020-02-17 16:58:13 +01:00

STL files have no notion of units, so basically everyone does different things with them... Not sure there is any "right" solution here, so will consider this as known issue related to the format itself.

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Unit scaling of 3D Print Toolbox doesn't work correctly #51013