Wham bam build plate 320x310 for the printers Creality CR-10S Pro and Anycubic Kobra Plus for example.
You can load this file into Prusa Slicer, Orcaslicer, and Bambustudio so the buildplate will match exactly your real one! The plate has its size and its printable area engraved into it.
https://www.whambamsystems.com/products/320-x-310-kit-with-pre-installed-pex-build-surface-1
The author marked this model as their own original creation.