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Working from scratch, following simplicity

Another helpful 3D printing thanks to FreeCAD

In my opinion, 3D printing is a valuable resource for problem-solving that sometimes happens in daily life. I want to share a simple adapter that I made some time ago for an air extractor too small to be fixed in the ceiling. I designed it with FreeCAD using parametric modelling.

Surely I could have bought an adapter in any hardware store! But I had a white plastic filament and I wanted to realise a customised adapter for my bathroom.

In this case, I chose FreeCAD1 and not Blender because the first one is an open-source parametric 3D modeller. In other words, it let you change a measure or the making step by step process to build your 3D object. In that case, I drew a sketch, rotated it by 360° and then applied the holes to define the adapter. Besides, it is similar to SolidWorks, a commercial software that I studied and tested in a previous work course.

Development of the air extractor adapter

And of course a related video:

  • 1FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.. Source:


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Nicola Rainiero

A civil geotechnical engineer with the ambition to facilitate own work with free software for a knowledge and collective sharing. Also, I deal with green energy and in particular shallow geothermal energy. I have always been involved in web design and 3D modelling.