¶ A1 mini Belt Tensioning
There are 2 timing belts on the A1 mini printer, which are transmission components that enable the toolhead (X), the heatbed (Y), and the X-axis (Z) to move in the set direction. Timely tightening of the belts is an essential guarantee for the print quality.
During the calibration process, the A1 mini performs a frequency scan to determine whether the belts need to be retensioned. If retensioning is necessary, a relevant prompt will appear; please follow the instructions to adjust the corresponding belts.
The printer's X/Y/Z axes determine the zero point coordinates of the toolhead in three-dimensional space by detecting the limits of each axis. If the position during the homing process deviates significantly or if there are frequent step loss, it is advisable to adjust the tension of the timing belts.
¶ Tools required
- H2.0 Allen Key
- 15 minutes
¶ Safety warning
Important!
It's crucial to power off the printer before conducting any maintenance work, including work on the printer's electronics and tool head wires. Performing tasks with the printer on can result in a short circuit, leading to electronic damage and safety hazards.
During maintenance or troubleshooting, you may need to disassemble parts, including the hotend. This exposes wires and electrical components that could short circuit if they contact each other, other metal, or electronic components while the printer is still on. This can result in damage to the printer's electronics and additional issues.
Therefore, it's crucial to turn off the printer and disconnect it from the power source before conducting any maintenance. This prevents short circuits or damage to the printer's electronics, ensuring safe and effective maintenance.
For any concerns or questions about following this guide, please open a new ticket in our Support Page and we will do our best to respond promptly and provide the assistance you need.
¶ X Belt Tensioning
¶ Location of the tensioning screw
The tensioning position of the X belt is on the back of the toolhead, as shown in the following figure.
¶ Operation guide
1. Operate the printer to raise the X-axis to the middle position of the Z-axis to avoid scratching the heatbed when moving the toolhead;
2. Loosen the tension screw with an H2.0 Allen key by one turn (do not fully loosen them), and move the toolhead back and forth along the X-axis 3~4 times by hand, then retighten the tensioning screw.
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¶ Y Belt Tensioning
¶ Location of the tensioning screws
The tensioning screws for the Y axis belt are located in front of the bottom base, covered by a small cap, which needs to be removed first.
¶ Operation guide
1. Remove 2 screws and take off the Y-axis rear cover.
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2. Loosen the tensioning screw (the one in the green circle below). Push the Y tensioning block and re-lock the tensioning screw.
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¶ Calibration
After both the X and Y belts are tensioned, open the printer, select Vibration Compensation in the Calibration menu to complete a calibration process.
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In addition, all series of Bambu printers can be calibrated through Bambu Studio.
¶ End Notes
We hope the detailed guide provided has been helpful and informative.
If this guide does not solve your problem, please submit a technical ticket, we will answer your questions and provide assistance.
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