Easy way to stick STL's together
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Easy way to stick STL's together  

Jamie Loft
New Member
Easy way to stick STL's together

Hi all

my use case is printing 3d scenery for wargames

most of the models come in multi part which is good to remove the top floor to access the lower floors

However - many models have also been cut up to make them printable with smaller printers - now I have an XL I would like to join these models back together - I have been doing it by hand but there must be a better way to make them line up.

Posted : 29/02/2024 6:15 pm
Honorable Member
RE: Easy way to stick STL's together

It won't work in the slicer, use some CAD program to edit the models, it might be possible to join the files there..

Posted : 29/02/2024 10:17 pm
Active Member
RE: Easy way to stick STL's together

I would suggest you take a look at Meshmixer by Autodesk. Free and simple.

Posted : 29/02/2024 10:36 pm
Veteran Member Moderator

IF the parts have been saved as STL's with the Orientation data intact, you can add one bottom part to Prusa Slicer, then Right click on that part, and choose 'AddPart>Load' from the menu, and add a second part. hopefully it will magically appear in the correct location, relative to the first part
If this works, repeat for the remaining parts. 

If you download and open the attached '5183762-Parts.zip' zip file, 
then open prusa slicer, and add the STL 'Base.stl'
then Right cclick on the base and Add Part > Load   'Part1' 

then repeat, adding 'Part 2'

you should end up with  

with two lines of text aligned on top of the base
Parts 3mf   < this is a .3mf   file of the prusa slicer session, above
Note, this only works with STL Files that have been saved with the orientation data intact   
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 : 01/03/2024 2:16 am