by pfuetze » Thu Sep 14, 2017 1:56 am
Randy, thanks for the idea!
the existing bore in the crowns is 1.5mm
i could use a piece of axle to align the crown, clamp it fixed, switch to the 2.2mm drill bit and drill the hole.
most of the crowns are off-center but nicely right angled, so my problem really seems to be the centering. With the 1.5mm axle, this problem should be gone.
Will try it in the evening and report, i got 3 crowns left to try :)