Whenever I export files (.obj or .stl) they are really small (not file size, size of the object)

gus_barth

I've been having a problem recently where my exported files appear really tiny when imported into Prusaslicer, when I import them into Cura they automatically scale themselves up. For now, Cura is fine but I prefer Prusaslicer so I was hoping someone here would have the answer

gus_barth

I figured it out, I've been exporting in meters instead of mm, switching to mm seemed to fix my problem

michael3424

What units did you select for the STL file export?  I use mm as the export units and my parts open and print just fine in PrusaSlicer.

gus_barth

michael3424 said:

What units did you select for the STL file export?  I use mm as the export units and my parts open and print just fine in PrusaSlicer.

It seems to happen no matter the units. I have tried mm and inches and neither have solved my problem

michael3424

I've no clue what the problem is, but if you'd care to share a public link to an example problem file, myself or another user can see if we get the same results.  That might help narrow down the source of the problem.  Here's a link on how to do that if you are not familiar with the process.

https://forum.onshape.com/discussion/9107/forum-post-checklist-read-this-first#latest

gus_barth

\https://cad.onshape.com/documents/2a9f9b0cea6f8f2b1a8b77d8/w/df4cc9e25f6d6e29ddc4ca16/e/14e6ac15852bed436d9356d9

Here is one of the models, this one is in inches.

https://cad.onshape.com/documents/d75aeecbcda609f4cb4ad8fa/w/6a4dd95b715619b68ebebebe/e/b8f7d385517a27511a8dd881

This one is in mm.

michael3424

Near as I can tell you will need to make both links public in order for us to try slicing exports of the parts.  The page that I linked to above gives directions on how to do that.

gus_barth

I figured it out, I've been exporting in meters instead of mm, switching to mm seemed to fix my problem

michael3424

That would do it!

BeansBaxter

It looks like OBJ doesn't have the option to change units. The files are exported in meters, which is relatively useless for 3D printing. I just submitted an improvement request to add unit selection to the OBJ export. If it's accepted I'll provide a link.

BeansBaxter

The improvement request is under review. You can view it here:
https://forum.onshape.com/discussion/15688/add-units-to-obj-export