TOYDIY 4in1 3D Printer FAQ - How to Set Z-offset Value Correctly?

1. What is the Z-offset value used for?

Z-offset value is used to calibrate the clearance between nozzle and platform under FDM function (Z-offset is a fixed default value in Laser function). When the equipment is out of the factory, we will set the appropriate Z-offset value and carry out the actual printing test. The value is recorded on the front page of the instructions. The Z-offset value is usually around - 0.80 mm at the time of leaving the factory. When using the device for the first time, you need to input the value into the device and print it. When the Z-offset value is set and the default file model is printed on the first layer, if the customer needs to increase the distance between the nozzle and the printing platform, the Z-offset value will be increased (e.g. from - 0.80 mm to - 0.6 mm); otherwise, if the distance between the nozzle and the printing platform is too large, the filament will be produced. If the material can not adhere to the floor well, the Z-offset value needs to be reduced (e.g. from - 0.80mm to - 1.00mm).

If the FDM function is used all the time and there is no hardware change, the Z-offset value does not need to be adjusted repeatedly. However, after switching from FDM to other functions and then back (or after the FDM tool head has been disassembled and assembled again), the Z-offset value needs to be reset.


2.How to set Z-offset value correctly?

There are two ways to set Z-offset values:

The factory settings for Z-offset are provided on the front page of the manual. You can set this value directly in the mode you set manually.

Manual Settings: Enter the menu Utility > Z-offset > Manual Input Z-offset, enter the values you need to set directly through the knob, then return to the current interface, click Save Settings to save. When using manual settings, there is no sticky floor or the nozzle is too tight from the floor. Refer to the description of point 1, increase or decrease Z-offset values manually according to the actual distance.

Auto Setting: Enter the menu Utility > Z-offset > Auto Set Z-offset, then put an A4 paper between the platform and the sprinkler, and adjust the distance between the sprinkler and the platform by switching the knob, so that the height between the sprinkler and the platform is just an A4. At this point, the value displayed on the screen is the more appropriate Z-offset.

Number, and then return to the current interface, click Save Settings to save. Similarly, when automatically acquired Z-offset values are used, there is still a situation of non-sticking floor or too tight nozzle distance from the floor in the first layer of printing. Refer to the instructions in point 1, increase or decrease Z offset values manually according to the actual distance.


3.After setting the Z offset value according to point 2, what should be done if the first layer printing is not successful (not sticking to the bottom or not filamenting)?

After setting Z-offset in two ways at point 2, if the printing of the first layer is not successful:

First, you should check whether the Z-offset value has been entered and saved. Users must check again to ensure that the value has been entered and saved successfully (there is a minimal probability that the value will be lost or changed after shutdown, so it must be checked again).

Secondly, please check whether the tool head is shaking apparently. Usually it is necessary to check whether the sprinkler of the equipment is shaking (such as whether the fixed screw of the sprinkler is tightened, whether the sprinkler is inserted into the dovetail slot of the slider to the end, and whether the X-guideway is shaking seriously).

Thirdly, please check whether there is serious distortion and bending of the printing plate. Because our automatic leveling system is based on calculation compensation without obvious distortion of the printing platform, if the printing floor is too bent, the inaccurate calculation of the compensation value will lead to printing failure. The warpage can be seen by placing the ruler on the printing platform.

Fourthly, please check whether the nozzle itself is normal. Use the wire feeding function alone to judge whether the wire is normal or not, and refer to the plug treatment process if there is a plug.

Finally, do not intentionally want to reach a very perfect Z-offset value, our factory default Z-offset value can be used for routine printing success, after you have some experience, then continue to optimize and adjust this value.