I needed an adaptor from 68mm guttering to 40mm push and fit pipes. As i couldnt find anything in the local hardware shop and online options were quite expensive, i designed my own. Works perfectly and it was printed in PETG and then a coat of paint applied interior & exterior. It has been up for a week with quite heavy rains and performs as expected. If you can find someone to sell this too - go for it :D

0.2mm layer height 

No Supports Needed

5+ walls 

PETG or ABS/ASA recommended