User's Manual

Chapter 7. Printer Calibration

Printer calibration in Tiertime system involve of followings:

1. Nozzle Height Measurement

2. Platform Matrix Leveling (9-Point Compensation)

3. Vertical Calibration

4. Dimensional Calibration

All the above calibration are made in terms of SOFTWARE. Nozzle Height and Leveling

Compensation are routine procedures that are done by users.

For Dimensional calibration and Vertical calibration were done through hardware in factory

and only need to be re-calibrated in software when user found the corresponding

measurements are not satisfactory.

Since all the calibration data are stored in the on-board SD card of the touchscreen

mainboard. If user replaced/formatted SD card or replaced touchscreen entirely, the

calibration data previously made will be lost and the calibration may need to be redone.

7.1 Nozzle Height Measurement

Nozzle Height Value is the most important measurement of the printer as it determines how

close the nozzle to the build platform when printing starts. The optimal distance between

nozzle and build surface depends on depends on different situation.

If use raft, the optimal distance is about 0.2mm.

If print without raft the distance should be less than 1x layer height, eg 0.2mm layer the

distance should be about 0.1-0.15mm.

The reason for this is, in order to achieve good first layer adhesion, the first layer should be

pressed against the build surface, become slightly overspread to obtain a adequate contact

with the print surface.