This is a RV trailer birdhouse. The diameter of the entrance is 2 3/8". The sides of the RV, frame and wheels are super glued and used PLA as print material. For the roof rack, use M4x 12mm screws and I've added nut profiles insides of the roof rack. Use the roof rack to hang the birdhouse.
I also added 4 holes near the bottom for drain just in case water pools up inside.
Update, 11/3/15: I uploaded a new body with REV. 2 in the suffix of the file name. There was an issue with Slic3r printing, since I use Simplify3D I can't add much as to what may be wrong with the model. I made some adjustments in SolidWorks (removed mirror features which can sometime float feature in the air), I hope this helps. I tested this in Simpilfy3D and everything was good.
| BH_Back_Side.STL | 144.0KB | |
| BH_Body_Rev._2.STL | 181.7KB | |
| BH_Frame.STL | 708.5KB | |
| BH_Front_Door_Side.STL | 1.1MB | |
| BH_Roof_Rack_Hanger.STL | 69.2MB | |
| BH_Wheel.STL | 38.9MB |
