first layer calibration shapes customizable —

Founded first layer calibration shapes customizable models & stl files for printing
CaliDragon
McGybeer
Parametric Slide
Ken_Applications
Coca Cola Scarf and bottle
Joey_Layer_By_Layer
Nonalaef Uararo
adrian_liehner
USB Stick Holder
wabbitguy
Bullet  Geometrix
DlgltalSun
wide vase
Damir Perisa