Simple birdhouse that should have the proper dimensions for small birds like wrens, chickadees, downy woodpeckers and some finches.

It's built in three parts that friction-fit together: bottom, middle and top. You need all three to make the birdhouse. Mine fit together so tightly that I probably won't need to glue it.

On the back are two slots to use to hang it on a tree or pole. The holes in the bottom aren't for mounting, but for drainage.

Solidoodle

Solidoodle 2 - Base

No

No

.3mm

I needed to use a brim on the middle section.

If you have a bigger printer than mine, you could print it in two pieces by increasing the height of the bottom.

Friction-fit the three pieced together and hang it using the holes in the back.

I used OpenSCAD - files included.