Bambu Lab A1 A1Mini Extruder Cooling System
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Description
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This model is a click-on cooling system for the A1 and A1 mini extruder
This model draws inspiration from the snap-fit design in the following link, thanks to the author NGYX
A1/A1mini Extruder Cooling Mount from NGYX - MakerWorld
Of course, if you find this troublesome, you can also purchase the finished product directly via the link below. Thank you for your support.
Bilibili Workshop (bilibili.com)
Boost Me (for free)
Thank you for your support
2025/05/27 Updated simplified wiring diagram per user request
This cooling system utilizes a 40°C KSD9700 quick-reset switch. The fan automatically activates when the extruder exceeds 45°C and shuts off below 40°C. This addresses the issue of standard KSD9700 temperature control switches, where fans either remain on or off constantly. This is because the operating and reset temperatures of standard KSD9700 switches differ significantly (e.g., 40/45/50/55°C versions all have a 25°C reset temperature). Under typical ambient conditions, the fan cannot be turned off. Therefore, this cooling system employs a quick-reset version, with a reset temperature only 5°C lower than the operating temperature, ensuring everyday functionality.
XY-axis stepper motor cooling is currently undergoing testing and will be integrated with this system in a future update. Stay tuned.
PLA or PETG filament is recommended for printing. Printing parameters are as follows:
Layer Height: 0.2mm
Walls: 4
Top Layers: 4
Bottom Layers: 4
Infill: 10%
The following components are required. Purchase links are included in the BOM.
5V 9000 RPM 4010 Fan: 1
M3*10 Pan Head Screws: 4
45°C KSD9700 Quick-Reset Normally Open Temperature Control Switch: 1
1.5m USB Power Cable: 1
Cable Ties & Heat Shrink Tubing: 1 set
Functional Description:
External power supply; does not affect printer operation
Non-destructive snap-fit installation; does not affect printer functionality or warranty
Fan automatically activates when extruder motor temperature exceeds 45°C
Fan automatically shuts off when extruder motor temperature falls below 40°C
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License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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