Geeky Knobs for Ikea Oxberg (Billy) Doors

Friends of mine recently installed a pair of Billy shelves with extensions and glass doors (Oxberg). The included knobs are painfully boring so after some fiddling about I created 4 sets of geeky knobs with classic computing logos on them. These knobs are 20mm tall and 20 mm wide with a 2.5 mm pilot hole for the included hardware. They fit right where the included knobs should go.

I created these by pulling the logos as .svg files from wiki commons and uploading them to TinkerCAD. I then added a 2mm thick ring around the logo and extruded the whole thing 1.5mm in the z. I then imported the new .stls into Prusa slicer and dropped them on top of a cylinder (18.5mm tall, 20mm in diameter). I added a smaller cylinder negative space for the pilot hole (2.5mm diameter, 15mm tall). 

I have included the .3mf files for each and the .gcode I used when printing them. I created an Apple logo, a Commodore “Chicken Head” logo, and an Atari logo. The pictures show a Bell Labs logo as well but I did not create the .stl that I used so I do not feel comfortable uploading the files myself. If you want to find the logo I used it, is on Thingiverse and easily searchable.

If you would like to create your own logo I have included a “starter” project file of just the cylinders. All you need to do is slap on a 20mm round logo that is 1.5mm tall.

Printed in PLA. Layer height does not matter too much, just make it fine enough at the “top” to actually show the logo. Print with 3 shells and a lower infill to allow for some expansion when you add the screw. It will almost definitely split at 100% infill. I aligned the seam towards the “bottom” of the knobs since that is not as visible and I did not like the scattered.

This is my very first self-designed model ever so I hope you find them useful :)