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From the FAQ: You may use the hovalin for commercial purposes if you agree to send 10% of your gross revenue from use of the design to HOVA LLC every six months

From the FAQ: You may use the hovalin for commercial purposes if you agree to send 10% of your gross revenue from use of the design to HOVA LLC every six months. It may be open source, but it's not open source as I've ever encountered it before. (Also, I don't think I've ever heard someone claim that copyright law allows them to demand royalties on the use of a musical instrument. Is a musical performance a derivative work of the instrument design?)

marcosscriven 11y ago
I couldn't find the source - only the .stl files There's a repo on GitHub, but it looks old https://github.com/matthova/hovalin https://github.com/matthova/hovalin
naz 11y ago
I think that's referring revenue from printing and selling your own copies of the completed violin, rather than from musical performance.
- vollmond 11y ago
  Though you'd think it would be worded more like "you may use the Hovalin design files for commercial purposes...."
jononor 11y ago
Requested them to release the sources, not just the .STL. Releasing just .STLs is more akin to freeware than open source, as the sources are the project files uses to produce the .STL (which is similar to a compiled binary).
- pmelendez 11y ago
  I don't quite understand that analogy. In other to while trying to understand the assembly code that was generated. STL, on the other hand, is a text file that can be imported for most 3D design tools and hence you can modify it.
  - mobiuscog 11y ago
    Exactly - STL is just a storage format of the raw data (vertices, edges, faces). A .OBJ file would be the same. I'm not entirely sure what others sources may be useful.
  - jononor 11y ago
    Sure you can modify it, but only trivial things like scaling, chopping of a part, and if you are lucky, meshing it with some other part, will be easy. Say for instance you want to do something simple, like use another sized tuning pegs for this violin. That means changing the diameter (and possibly depth) of the holes they go into. In any reasonable parametric CAD software model (as Fusion 360 enourages), this is merely finding the sub-part that represents the peg or peghole, and entering in a new value for the diameter - every affected area of the model will be updated, correct & still manifold (watertight). With an .STL you will need to find & select all the relevant edges/vertices for each hole, and nudge them around until they (hopefully) fit. This is a trivial example, it becomes more interesting (more painful) if the feature at hand is more complex. Say if there was a trapped nut. In an STL, all the humanly meaningful parts of why the model is the way it is, how it is built, is gone. You can dissassemble some executable you get too, and muck around with the code to do modifications - but its hardly how one should do open source.

marcosscriven 11y ago

I couldn't find the source - only the .stl files There's a repo on GitHub, but it looks old https://github.com/matthova/hovalin https://github.com/matthova/hovalin

naz 11y ago

I think that's referring revenue from printing and selling your own copies of the completed violin, rather than from musical performance.

vollmond 11y ago
Though you'd think it would be worded more like "you may use the Hovalin design files for commercial purposes...."

jononor 11y ago

Requested them to release the sources, not just the .STL. Releasing just .STLs is more akin to freeware than open source, as the sources are the project files uses to produce the .STL (which is similar to a compiled binary).

pmelendez 11y ago
I don't quite understand that analogy. In other to while trying to understand the assembly code that was generated. STL, on the other hand, is a text file that can be imported for most 3D design tools and hence you can modify it.
- mobiuscog 11y ago
  Exactly - STL is just a storage format of the raw data (vertices, edges, faces). A .OBJ file would be the same. I'm not entirely sure what others sources may be useful.
- jononor 11y ago
  Sure you can modify it, but only trivial things like scaling, chopping of a part, and if you are lucky, meshing it with some other part, will be easy. Say for instance you want to do something simple, like use another sized tuning pegs for this violin. That means changing the diameter (and possibly depth) of the holes they go into. In any reasonable parametric CAD software model (as Fusion 360 enourages), this is merely finding the sub-part that represents the peg or peghole, and entering in a new value for the diameter - every affected area of the model will be updated, correct & still manifold (watertight). With an .STL you will need to find & select all the relevant edges/vertices for each hole, and nudge them around until they (hopefully) fit. This is a trivial example, it becomes more interesting (more painful) if the feature at hand is more complex. Say if there was a trapped nut. In an STL, all the humanly meaningful parts of why the model is the way it is, how it is built, is gone. You can dissassemble some executable you get too, and muck around with the code to do modifications - but its hardly how one should do open source.