CaliCross with Relief

This is an edited version of the Calicross shrinkage calibration tool, a simple but powerful model to help measure dimensional accuracy and filament shrinkage on your 3D printer. I made two main improvements:Increased the model thickness by 2 mm, making it 6 mm thick instead of the original 4 mm. This gives a better grip for calipers and makes measurements more stable.Added 1 mm corner relief cuts to all inside corners. These help your calipers reach the bottom edges without being blocked by corner fillets, allowing for more precise measurements.These changes follow the same modifications made by fridge2theface on the original design by lukeskymuh. I only applied the same improvements to the design made by Adam L.