Moon lamp base

I just took the 40mm ceiling base and made it to have a 35.8 mm hole to fit all the bedside lamps in our house. One is 12mm thick and should fit most, but made a 8mm thick one for people needing something thinner.

I have not tried the 8mm thick one. When I printed the 12mm thick one the bore came out to 35mm (It is fixed now to 35.8) and I had to sand the inside. If you print the 8mm one please let me know how it came out for size.