Bambu Lab A1 mini Toolhead Board The Print-Head PCB Behind the A1 mini.
Genuine Replacement Toolhead Board for the A1 mini.
The Toolhead Board is the small PCB that lives in the A1 mini’s print head. It ties together everything on the moving toolhead — the hotend heater and thermistor, the part-cooling and hotend fans, and the extruder’s motor and sensing — and carries it all back to the printer over a single toolhead cable. When a fan, heater, or sensor on the head stops reporting and the wiring checks out, this board is usually the part to swap. Order it as a genuine Bambu Lab replacement. Full specifications →
Genuine Bambu part, stocked in the USA — ships from Rev1. Running the full-size A1? Call (248) 707-2950 to confirm the right board.
Genuine Bambu Lab Part. US Stock, Fast Shipping.
The A1 mini Toolhead Board is an authentic Bambu Lab replacement part, supplied and supported by Rev1 Technologies — your authorized Bambu Lab reseller in Auburn Hills, Michigan. Not a third-party clone.
One Board for the Whole Print Head.
On the A1 mini, the toolhead moves constantly — and every sensor and actuator on it has to talk to the printer without a thick loom of wires dragging along. The Toolhead Board is what makes that possible: the hotend heater and thermistor, the part-cooling and hotend fans, and the extruder connect to this board through the JST headers you can see along its edges, and a single USB-C toolhead cable carries power and data back to the mainboard. It’s the hub of the print head.
A Direct OEM Board Swap.
This is the genuine Bambu Lab board, so the connectors, layout, and motor-control electronics match the original exactly — the fans, heater, thermistor, and extruder plugs all land where they should, and the toolhead cable seats the same way. Follow Bambu’s replacement guide, move the connectors across, and the print head is back in service without hunting for a fan or heater fault that was really the board.
Built for the A1 mini.
This is the toolhead board for the Bambu Lab A1 mini. The full-size A1 uses a different toolhead board, so if you run the larger A1 rather than the mini, confirm the correct part with Rev1 before ordering — the two are not interchangeable. For the A1 mini, this is the genuine print-head board. Not sure which machine you have or which fault points to the board? We’ll help you check.
Bambu Lab A1 mini Toolhead Board — Specs
WHY REV1 TECH
Authorized Bambu Lab Reseller. Additive Specialists.
Rev1 Technologies is an authorized Bambu Lab reseller in Auburn Hills, MI, supporting engineers, print farms, and manufacturers across the USA.
We stock the Bambu ecosystem and support it — from printers and filament to the spare parts that keep them running. Buy the replacement from a team that can help you fit it.
FAQ
Frequently Asked Questions
What is the A1 mini Toolhead Board?
It’s the PCB inside the A1 mini’s print head that connects the hotend heater and thermistor, the part-cooling and hotend fans, and the extruder, then links the whole toolhead to the printer over a single USB-C toolhead cable. It’s sold as a genuine replacement part.
Does it fit the full-size A1?
No — this is the A1 mini board. The larger A1 uses a different toolhead board, and the two are not interchangeable. If you run the full-size A1, contact Rev1 and we’ll confirm the correct part before you order.
When would I need to replace it?
Usually when something on the toolhead — a fan, the heater, the thermistor, or the extruder — stops reporting or responding, and the wiring and components themselves check out. That pattern often points to the toolhead board rather than the individual part.
What connects to it?
The hotend heater and thermistor, the part-cooling fan and hotend fan, and the extruder all plug into the JST headers on the board, and the USB-C toolhead cable carries power and data back to the mainboard. You transfer these connectors from the old board to the new one during replacement.
Is this a genuine Bambu Lab part?
Yes. Rev1 Technologies is an authorized Bambu Lab reseller, and this is a genuine Bambu Lab replacement — not a third-party clone. On a toolhead board, matching connectors, layout, and electronics is what makes the swap drop in and work, which is why the OEM part matters.
Can Rev1 help me install it?
We can confirm the right board for your printer and symptom and point you to Bambu Lab’s official replacement guide. For US customers, buying the spare from Rev1 means fast domestic shipping and a real person to call at (248) 707-2950.