Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4348759.
This birdhouse has a 32mm entrance to accommodate wrens or chickadees (other similar sized species as well). It has adequate venting and weather-sealed, the front is easily removable for cleanout.
Print it laying on the back wall to avoid supports.
Print with PETG or ABS, then paint to help with UV stability. Make sure you use a very wide brim and anything that will help with adhesion to reduce warping.
Checkout my other birdhouses as well.
I used Overture PETG with great results: https://amzn.to/2Rwhky7
If you found this useful, please consider a SMALL DONATION @ https://www.paypal.me/shanekartz to help cover the time of design.
Please Post your Makes. I would love to see how they turn out.
Thanks, Enjoy!