I designed a quick birdhouse for my daughter.
Note: The tolerances are TIGHT and I had to trim some of the plastic to get a solid fit. I didn't have to use glue or anything so that is a bonus ;)
I used 10% infill to create some sort of air gap in theory providing some level of insulation. Supports will help prevent any issues around the opening hole if you want to eliminate any stringing issues in that area.
Printer:
Ender3
Rafts:
No
Supports:
Yes
Resolution:
Any
Infill:
Any
Filament: Amazon PLA
Notes:
I used 10% infill to create some sort of air gap in theory providing some level of insulation. Supports will help prevent any issues around the opening hole if you want to eliminate any stringing issues in that area.