xLCD Knurled Knob with more "Bling" (accent ring)

I really liked the knurled knob look, but thought it needed a little more “bling” to help stand out, so I borrowed the inspiration from the Improved Knurly LCD Knobs for Mk4, XL, Mk3S(+), and Mini(+) by fuchsr and added an accent ring to Ichooorrr's knurled knob model.

For even more “bling,” I tried printing it in a silky silver PLA to give it a metallic/aluminum look.  The problem I ran into was that the piece making the friction fit to the shaft kept snapping off because silky PLA doesn't have the same layer bond strength as PETG.   I changed the design to a slightly oversized hole with a flat and two small splines that can be sized to fit the shaft.

There is now an additional quick post processing step to use a needle file to file down the two splines opposite the flat to create the perfect friction fit for the knob.  The accent ring should just slide into the channel using your thumbnail and does sit a little below the surface.  A spot of glue may be necessary on the accent ring if the fit is too loose.

Printing tip:  Use the smooth PEI sheet with concentric infill on the bottom layer to give the face of the knob more of a “machined” look.