About this 3D model
Its not so difficult to print.After printing,you can slide the parts together.3 shells and some infill, 15%For the Birdstand use more infill... The bird hole opening is 32 mm,For the following birds.Great titmouseNuthatchEuropean Pied Flycatcher... I included two version,one for the birdhole inserts and one with 32mm bird opening.