This is print #3. The walls measure out between 0.56 and 0.6mm thick. The cube exterior is is 20.24x20.23mm.

Here are my Slic3r settings. Please tell me how I could do better. I am running a Prusa with 0.3mm nozzle hole and white ABS 3mm filament.

This is the first print I put online with all my calibration settings.

I will post which setting I change in each subsequent print. Trouble is I don't know what I should tweak. I don't know what other tests I should run. I might even need hardware upgrades like a floating X axis to reduce Z-wobble. (This is a thing I've heard of and never seen.)

printer/Alpha.ini - http://pastebin.com/6yFp7ZnG

print/alpha 0.4 support.ini - http://pastebin.com/TKD9rUsk

filament/Alpha White.ini - http://pastebin.com/svcMXeHt