This spool holder is designed with special dimensions for 3D Printing Nerd's shelves.
It looks like a camera with a lens attached to it when fully assembled, which makes it good looking even when not used.
It consists of 2 parts, the "Half" will be printed twice, while the "Attaching Pin" will be printed 4 times.
Unfortunately, I don't have a 3D printer so I can't attach any photos of it being printed, but it should act as expected.
It is inspired from LEGO Technic Pins, so it can be attached and removed from the wooden shelf easily.
The spool holder's axle was a major problem while designing, as every company produces spools in different dimensions. I thought of making a universal spool holder that could change its axis' radius, but that would lead to its breaking as that will make it much weaker (It is made out of plastic after all). So I made a holder with dimensions for the sponsor's filament spools, MatterHackers filament spools.
I've designed it in SolidWorks 2016, renderings were made using PhotoView 360, while the last picture was made using a combination of PhotoView 360 & Adobe Photoshop CC 2015.