My cousin asked me to build him a left-handed electric guitar with a Pittsburgh Steelers theme.
So, I bought a right-handed SG kit, cut it up and re-glued the body back together it as a lefty, and 3D printed some nifty volume and tone knobs that look like the Steelers logo. The files provided have a raised "V" or "T" for volume and Tone, or a plain knob with no raised letter. Also included a round back panel to better mimic the logo (see photos).
Other 3D printed parts on the guitar are the pickguard, truss rod cover, and bridge support (necessary to change the angle of the bridge so it intonates correctly as a lefty).
Also, check out my 3D printed Rickenbacker 325 guitar:
Other guitar knobs I've designed:
I put some paint on the "V" and "T" letters on the top of the knobs, and capped them with a clear doming epoxy. But, this is only optional. They look great just as printed.
Also, you may have to drill out the center hole if its too tight for your potentiometers.