WIP retractable pen

Very much a work in progress, ImplicitCAD does not seem to output .stl/.obj files that slic3r likes. Also I dont think the pen would grab the lead well.

pen.stl provided went through meshlab using the 'Surface reconstruction poison' remeshing with octtree depth 10. (..Which isnt perfect, it changes the surface, i think )

Slic3r does some funky things(it might be the model) at the bottom, probably want to watch the start of the print, so you know it doesnt come off.

I was annoyed by all the delays largely caused by software stuff so i decided to just publish the WIP.

Development version at github

NOTE: the thingiview is slow on this one