Ender 3 V3 Ke printin taller pieces

Hi all there and happy new year.

I have an Enfer 3 V3 KE that prints well until now but I noticed when I had to print some pieces with critical dimensions (the Toyota 22RE Gearbox) that the pieces ar taller than they have to be. I desing and print two platforms for a scale and for 8mm high the printed piece is betuween 0.4 - 0.6 mm taller. For this is nos problem bur for the gearbox model is because I can’t close it.

I look for information about how to calibrate Z axis but I found nothing about. I always calibrate platform before print.

Please, where can I find information about calibrate Z axis?

Thanks a lot.

thats quite a lot out. If I print 20x20x20 calibration cubes the z height will be within ±0.05mm, that’s on all my printers not just the KE. That is quite a lot out on yours, 5%? X and Y I can work out with belt tensions or stepper current, but not for Z.

Hi @Bonfireman
I’m now printing another calibration cube, I’ll tell you what happened.

Just noticed there is precise Z height, hopefully it does what it says on the tin. This is in CP6 not CP5.1.

The cube is finished, is 30x30x30 and the result is X: 29.9 Y: 30.2 Z: 30.3, diameter 29.9 and the offset is -2.20mm.