Summary

Printed out the Replacement knob for Bosch stovetop for my brother-in-law, and it worked well for several months, but there were a couple minor issues:

• The indicator mark pointed the wrong way by 180 degrees.
• The fit on the shaft was a little bit sloppy.
• The shaft hole was too deep - stuffed some paper towel in it and it was okay.

This makes me think that the oriignal knob was probably for a different Bosch stove.

My brother-in-law actually liked the replacement knob more and wanted a full set, so I turned the D cutout around, sized it down so it's a nice snug fit, and printed out a bunch.

If you're curious about the fifth knob in the photo, that was a little surprise - I took a bad 3D scan of my niece's face and swapped her in on one of the knobs.