

For builders
Everything except the printed parts
The same v2 mechanism, supplied as a kit. You print the parts yourself, and the STEP files are included with your purchase so you can change the design to suit your CNC. The AltMill is used as the template.
- Stepper and control assembly, assembled and ready
- STEP files included, so the design is yours to modify
- You print the boot parts; the port size is whatever you print
Automatic tool changes
It still moves out of the way. Every M6.
Nothing about the mechanism is reduced. It retracts before the spindle reaches the tool changer and returns to cutting height on its own, and the dust shoe comes off in seconds without tools when you want to clean it.
- Retracts before the spindle moves to the changer
- Material height set with the adjustment knob
- Dust shoe removes in seconds, no tools needed
Support
Limited support, by design
This version assumes you are comfortable printing parts and assembling the system yourself. Support is limited compared with the fully assembled boot — if you would rather it arrived built and tested, buy the assembled version instead.
- For creators and tinkerers who are happy building
- Limited support compared with the assembled boot
- The assembled AltMill version is sold separately
At a glance
| Template machine | Sienci AltMill with an automatic tool changer |
|---|---|
| You supply | The 3D-printed parts |
| Files | STEP download included with your purchase |
| Trigger | Retracts on every tool change, expands afterwards |
| Power | 24 V DC |
| Support | Limited — assumes self-assembly |
Questions
What do I have to make myself?
The 3D-printed parts. Everything else — the stepper and control assembly, the interface cable and all the hardware — is in the box.
Can I change the design for my machine?
Yes, that is the point of this version. The STEP files come with your purchase, so you can adapt the design to a machine other than the AltMill.
How much support comes with it?
Less than the assembled boot, deliberately. This version assumes you already know your way around printing and assembly. If you would rather not, the fully assembled version is the one to buy.
How does the pre-order work?
Your card is charged when you order, and the kit ships as soon as the batch is ready. The current estimate is shown above the buy button, and this page is updated if it moves.
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