It takes high calibration to print this shape correctly. If printed with zero infill, or if under extruding, the side that narrows to thin edge will have a very different length/width compared to the opposite side (circular hole side).

This shape was created to be used similar to the calibration cube. I find that I get more information from the XYZ lettering that is usually scripted on the sides so I figured a little more detail in a simple shape would be good. The size is 20 x 20 x 20mm, and uses less filament than the cube. With intention of keeping the design simple I found that the shape can give a lot of information about a printer's performance. The features I have included in to the design are as follows:

Initial Orientation

45 degree angle (step up)
45 degree overhang
90 degree x 5 mm vertical (for view of layers)
2.5 mm walls
Decrease in wall thickness to zero thickness edge (top of square!)
90 degree vertical rounded edge (step up)

If Placed Up-side-down:

Very low surface area to test adhesion of build plate
60 degree angle (step up)
Roof surface quality viewing

If Placed on the Side:

5 mm bridge
8.35 mm bridge
90 degree gradual overhang with mass load increase

Center square bore:

2.4 mm tolerance test (needs testing with vernier-calipers)

I hope this can be a help for someone! Thank's for viewing :) :) :)

MakerBot

MakerBot Replicator

No

No

0.1 - 0.3

0 - 100

Feedback in the comments for how this test prints with different materials would be appreciated.