As it is a shutter block with mechanical stress 10% minimum filling and wall thicknesses of 1.2 mm minimum Except for the head which has no mechanical stress
This is an original shutter block with Cat's head
The buttonhole will be cut and glued to the cat's head
You can put another head or personal object..... :)
A screw and nut are passed through the axial passage of the support.
The base has a straight part, so you can lengthen (or shorten) the base to fit the flap model.