Replacement knob for A/C gauges

thingiverse

I needed to make a replacement knob for my A/C gauge set (id brand). I'd imagine it will fit virtually any brand that had the "D" type stem. If in doubt drop the knob part below the build plate so that only the female section prints and do a test fit. Mine fit snugly without the need for a set screw but I did include a hole to run one in if needed. I placed a support blocker (Cura) and set the infill at 100% where the stem goes in.