About this 3D model

This birdhouse is for a small birds. The hole is 28mm. Birdhouse's main body is divided to 6 parts making it very easy to print so each part can be printed within 2 - 5 h using 0.3 layers. Parts can be glued together or use four 3 mm metal rods in each corner to get a super strong main body. It seems that my desing is good/approved as in my yard The Eurasian blue tit nest there. :)