Modern Simplistic Bird House (two parts - one 1kg spool) - Mourning dove - Large

This is a birdhouse with a very simplistic design.  It is broken into two parts (LEFT and RIGHT), each part should fit in a (220mm) cubed build volume.  The design is meant to be open (preferred by some birds) and easily cleanable (interior should be easily hoseable).  The structure is a cantilever, only supported by the back wall.

Why the simplistic design: 

• The design is meant to attract mourning doves.  These are open nesters (or ledge nesters) as opposed to cavity nesters. I get a couple of resilient pigeons visiting that always want to nest on an exposed beam above my bbq grill.  I have bought a couple of birdhouses and placed them away, but they are either too small or not open enough design for their liking.
• This bird house is meant to be easily cleanable.  After the birds are done with it, the interior is filleted so that you can hose it clean without having to remove it.
• It has 6 reinforced holes in the back to drive wood screws through.  4 screws may be enough to hold it.

About the two parts:

• The parts have a slight tolerance so they can fit for glueing.  If printed upright (with the back to the plate), you will not need supports at all.
• I used epoxy resin to bond the two parts together, then I used white caulking to ensure water would not get it (I also used it to cover some printing issues I had with the left side of the house).

About Printing:

• I printed them using PETG (time will tell if it was a wise material) and then spray painted it with outdoor spray paint.
• Each part (left and right) should be a little less than 500g.  In this way, if it all goes well with your print, they should cost you a spool plus a couple of 12 hours runs.
• This was the first time I used PETG, so my first side had a few cosmetic issues, and the second side came out almost perfect.
• My suggested settings using a 0.4mm nozzle are gyroid infill @ 15%, 3 walls, and 5% infill overlap.  If you can get away with 4 walls, that should make the model more sturdy, but 3 seems to be ok for me.  (I used both gyroid and cubic, but thing gyroid should be better).