Portal3ABC, a third remix with variations from the illusion Portal of Ada Cohen

I did youtube videos and a Web page to give more informations on how to print it and to modify it with FreeCAD.

Links to my Web page giving more explanations :

https://www.gisinb.ch/yt/impression3d/portal/portal.html

Youtube video in french : 

Youtube video in english :

I completely redesigned the Portal, in FreeCAD. The basis, top and bolt are squares. I added a kind of support to help the 3d printing.

This is a version with 3 screws, and 3 variations.

I did also “support” for the screws : “botanical-portal_step_4.stl” and “botanical-portal_step_5.stl”. I called them : “Support_step_4.stl” and “Support_step_5.stl”. They are useless for this project, were useful for me when I printed the “botanical-portal” from Ada Cohen. I didn't know where to put them. I added also the associated FreeCAD files and two “.3mf” files to see how the support added to the piece should look like.