FFF-printable rigid parametric edged CUBE with FreeCAD source

A rigid edged cube can be made from two half parts and four pins.
Insert pins into 4 edges with a small amount of glue to connect the half parts.

You can easily alter the size of the cube by changing parameters of
"PillarOuter" in the parametric FreeCAD source, cube.FCStd.

Use the cube as you like!
For example, I made a support for morning glory with a 100x100x100 cube, 4 short pins and 4 chopsticks.film.
I printed it with a 0.6 mm nozzle.