Users Manual Part 1

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. For 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.