Print 3D

Edit:17 mai 2017, Cre:21 juil. 2015

OpenSCAD

A parametric modeler

Why using OpenSCAD ?

OpenSCAD is a very specific tool in the CAD world.
Instead of what its name implies, it is not a full fledged CAD, it is a 3D modeller frontend, where you built 3D volumes by programming. So this is a tool beloved by programmers (While I do some programming, I am not part of this crowd).
While the language is very basic, you need some programming skills and also you shall be capable to handle in your head the 3D model, as there is no direct interaction. It is a compiler and your part is shown as for any CAD program after the compilation, which could be quite slow. The idea to program models is not new, but OpenSCAD reopened this possibility.

I had some difficulties at the beginning as it is a Functional language, but I finally get used to, and after building my own library, I can do developpement relatively quickly compared to an interactive modeller.

I had some practice of Draftsight (2D AutoCAD clone) and Sketchup, unfortunately Sketchup is not a good tool for 3D printing, for multiples reasons (The STL files are not smoothed and have a lot of defaults).

The biggest default of OpenSCAD is that you cannot export your models. It is only possible yet to export part by part in STL format. That means you are locked with the program.

What version to use

I recommend to use the development snapshots, which in my experience, have always been stable and can be found here. The very last snapshots can also be found at the end of this directory

Customizer

One important development is a new GUI for parameters to interactively modify parameters with widgets and also create data sets, in a similar way as is done by the Thingiverse customizer. First 'official' release was in development snapshot of 20 January 2017. As of May 2017, this extension is still buggy particularly with included files, but usable. As all development functionalities, it needs to be specifically activated, see the OpenSCAD manual. Next version of my Delta simulator will use customizer datasets instead of including data files.

My developments

I yet developped in OpensCAD:

  • Another printer, the Lily
  • I developed a new box for the D-Box in the form of the Lily Big
  • A pre-project of a tiny CoreXY printer, the Halenia, with movement simulation
  • Working on these projects, to ease programming, have more compact code and go faster, I developed a relatively detailed general purpose library, that I published on Github.

There are also smaller project, you can find all my Openscad Work on Github

I also done some other undisclosed projects...

Resources

(c) Pierre ROUZEAU
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