Educational Cube (metric)

Hi 

these are 4 cubes to understand the relation / exponential growth of 
length - area - volume (mass)

print instructions:
- use a light color material to see engraved numbers better
- use a thin layer height (e.g. 0.15) to see engraved numbers better
- disable Arachne and use Classic perimeter generator 
   (otherwise there are small dots on the small cube engravings)
- choose infill of 73% on PLA to achive the correct weight

Greetings