My Stoopid Test Cube

This is my Stoopid Test Cube, there are many like it and this one is nothing special, just a block with a square hole. Specifically it is 25mm square, 5mm high and has a 10mm square hole in the center. No science was involved in it's design, and I didn't put much thinking into it, just wanted something quick to print that would do the job.

Also, just to note, I'm no expect on 3D printing, but I do have a couple years of practice (which again does not make me an expert). So please let me know where I messed up in the comments, and I may amend my ways. I use this thing to calibrate flow first, and then horizontal expansion only when necessary. When I get it close, I stop wasting filament on these, since Perfection is not a Pokemon that is worth chasing in my 3D printer world, Pika-closenufa-chu works pretty well.

To print this for calibration of flow, I use the following settings in Cura (in addition to whatever is recommended for the filament of course):

* Quality > Layer