First Layer Calibration Test

This is a simple .2mm first layer test.  I own 12 assorted 3D printers, and three relatively common build plate sizes, so I've scaled this model to fit plates of machines I own.

For my CR-10 clones, a CTC A10s and Sunlu S9 Plus, I use “1st_Layer_Test_290x290.stl”.

For my Tronxy XY-2 Pro and TwoTrees SK1 I use “1st_Layer_Test_245x245.stl”.

Lastly, for my Ender 3's, Sunlu T3, Anycubic i3 Mega, Anet A8, and Geeetech i3 Pro C I use “1st_Layer_Test_210x210.stl” .