Purple Martin House (improved larger version)

Printed this Purple Martin house and mounted 6 of them on a collapsible pole. They are 6" in diameter with a 2-1/8" hole.

UPDATE: the new larger house is in two pieces to facilitate easy cleaning, the walls are a bit thicker, and there is a porch that the Martins seem to like. There are 2 versions here, 6mm and 8mm for using rods that are 6mm or 8mm. I recommend using 8mm rods if they are more than 1 foot from the hex block. I used Gorilla Glue to hold the rods in the hex block and 6mm or 8mm n