Fractal Cube (3x3x3in Menger Sponge)

3in Menger sponge model. Made from a simple fractal which starts as a cube where each face is divided into 9ths and the center face cut out from the shape, those smaller faces then have the same thing done to them, etc. Better explained in this post by another user.

Two models are in the project file, one 3in 4-iteration cube and another 1in 3-iteration cube. I suggest printing the smaller cube first, as it prints significantly quicker, and any defects there will be present in the large model. I heavily suggest drying your filament before printing, as most of the print requires jumps between areas to build up the cube, causing stringing. The filament settings have a large retraction height to prevent this, but if your filament is good about stringing then you can turn off this setting saving a lot of time in the print.

Prints from corner with few supports to prevent half the faces from being 90-degree overhangs. If you want to print in a different orientation note there is small object merged with both the small and big cube to offset them from the build plate.

NOTE: The large cube is a long print (around 24 hours depending on retraction and adaptive layer height settings). If you keep the printer closed a lot of heat builds up in the enclosure and can cause the print to fail or print quality to drop. When printed on my P1S I used a glass top riser and a door holder to prevent the enclosure from getting too hot.

Some of the posted pictures may have some visible defects. I was not able to dry out my filament causing some issues with stringing and the outer wall. If I print this again, I'll update the images with a better-looking finished print.

Also, sorry I don't have a step file available, the original cad software I designed it in it prone to export errors, and I have not been able to convert the stl in other programs.