Finally I got the resin printer and did a reprint of the light knob. Much better result compare to the first prints I did using an ordinary 3D printer with PETG filament. From the resin printer there is no need for any refubrishing, looks stunning right from the print.

The file can be downloaded from my previous post: https://mc.grenasberg.no/2020/12/26/3d-printed-light-knob/