thingiverse
These are different versions of a four arm screw-box.
I was inspired by the following design to make this one with the measures I need.http://www.thingiverse.com/thing:582221
I have designed it mainly to contain an alto saxophone mouthpiece I printed (there are different models of it here in Thingiverse), but it can also contain any other kind of thing.
Edit: In the first version (1.1) was quite difficult to separate both parts so I've extended the base. I recommend to print the box B and C as it's easier to make them fit.
Edit 2: I created a new version of Box C with supports. As the piece was being printed it vibrate too much and it printed it wrong. After printing it, you'll just have to cut the support and smooth the surfaces a little bit.
I recommend printing version "Box B1.2" and "Box C 1.3 with support".
Direct link to the original creator's page
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, this model is available as a free download on thingiverse. Some creators accept tips or donations.
Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.