This is a truma roof cap. I printed from ABS, but I think PETG is good to. The first is fits but a little bit it was a little bit loose, bit it can be tighten. (it's in its plase about a month without a any problem)
I uploaded the thread lib too.
This version is not yet printed by me. I increased the thread from 59.5 to 59.7mm.
I increased the thread size to 60 (from 59.7). I printed only the thread to test it. It fits good for the original hole.
I also added stl file.
Okay, printed and tested the whole thing. The thread is good now.
I printed from ABS, but I think PETG is good to.
Printed with support, and later removed it.