MechAMS V2.2.5 · Bambu Lab A1 and A1 mini
8 filaments.One toolhead.No electronics.
Your printer's own extruder drives up to eight passive filament stations. You print the system yourself, from the files and the G-code generator.
- Firmware
- Stock
- Electronics
- None
- Filament change
- 40–60 s
- Prices
- VAT included
New in V2.2
- Easier installing
- Less filament and reduced weight
- More grip and less friction points
- Better and easier PTFE routing
- Easier customization
01 · On the printer
Built, mounted, printing.
From the bench to the printer: the module on an A1 mini, a finished mechanism, the eight stations in CAD, and a docking station loaded with filament.
Built one? Send a video or photos of your build to support@eyeball.engineering to be featured here.
CAD render
02 · How it works
Print it. Fit it. Print in colour.
Print it.
One guided Bambu Studio project for your printer, with every plate in build order. PLA for the parts, TPU for the belt and the filament drive wheels.
Fit it.
Open the stock toolhead and file the coupling interface on the extruder drive, so the printed coupling seats. The docking stations go on the bar on top of the frame.
Print in up to eight colours.
The G-code generator in your account writes your printer profile with the toolchange in place. Your extruder drives every station; there is nothing to plug in.
The usual way
AMS lite
4colours at most on the A1 series- Price
- €189
- What you get
- A finished unit for the A1 series
- On the printer
- Connected with its own 4-pin cable
03 · We have AMS at home
MechAMS V2.2.5
8colours on the A1 and the A1 mini- Price
- €89 for the files, plus about €20 to €60 in parts
- What you get
- Files you print yourself, and a G-code generator, for the A1 and the A1 mini
- On the printer
- No cable, motor or board: your extruder drives it
AMS lite price, colour limit and cable from the Bambu Lab EU store, 21 October 2026. MechAMS parts at eBay.de prices, October 2026, plus the filament you print it from. MechAMS is made by Eyeball Engineering and is not affiliated with Bambu Lab. The full comparison.
04 · Packages
Pay once.
Print it yourself.
Digital files, not a hardware kit. The €89 full project covers both printer models and adds Discord, the Workshop and the STEP files with the first stable release. The one-printer package is closed to new purchases.
The €49 one-printer package closed to new purchases after 31 October 2026 (Amsterdam time).
Choose the top bar or the full project.
TOP BAR
€10
Just the top bar
- The A1 mini top bar, ready to print in PETG
- Your Eyeball Engineering account and licence number
- The €10 counts toward a package later
ONE PRINTER · CLOSED
The €49 one-printer package closed to new purchases after 31 October 2026 (Amsterdam time).
Existing licences and promised updates stay unchanged. Checkouts opened before closing can be completed until their Stripe expiry. You can still upgrade to the full €89 project for €40 from your account.
PROJECT
€89
I want the project
- The A1 and the A1 mini, and every printer MechAMS adds later
- The guided build files, the G-code generator and every update
- The STEP files, with the first stable release
- Discord and the Workshop: every MechAMS mod and customisation in one place
“Just the top bar” €10 · “I want the project” €89.
Prices include VAT. By buying, you accept the Terms. Immediate download requires separate consent; your statutory remedies for faulty content remain. Refund policy.
What each package includes
| Top bar€10 | Project€89 | |
|---|---|---|
| Covers | The A1 mini top bar | Both, and every printer added later |
| A1 mini top bar | Included | Included |
| Guided build file | Not included | Included |
| Print files for every part | Not included | Included |
| G-code generator | Not included | Included |
| Updates | Not included | Every update |
| STEP files | Not included | With the first stable release |
| Discord and the Workshop | Not included | Included |
| Upgrade later | €79 to the project | Not included |
Bought V1? You're a Founder: V2.2.5, the generator, every update and every printer added later are yours at no charge. Sign in with the e-mail address you bought with.
Already own it? Downloads · Generator · Full specs and build requirements on Buy & specs.
05 · Questions
Before you buy.
All questions →Does it work?
Yes. MechAMS is the system I print on and ship.
How long does a filament change take?
40 to 60 seconds in regular use. Set up for speed, under 30 seconds is possible.
What does MechAMS change on my printer?
One thing: you file down the end of the extruder gear axle, so the printed coupling seats on it. That end of the axle only holds the rotation indicator on the front of the toolhead, and it still does afterwards. Extrusion is unaffected and the firmware stays stock. Worst case, a new extruder gear assembly for the A1 series is €10.99 at the Bambu Lab EU store (October 2026).
What else do I need to buy?
Bearings and PTFE tube. MR115ZZ bearings (11 × 5 × 4 mm), five in the toolhead and four in each station, so 37 for all eight; buy them, or print them if you'd rather. One PTFE tube per station, at least 50 cm each on the A1, 40 cm on the A1 mini. For all eight stations that comes to about €60 with bought bearings, or about €20 if you print the bearings, at eBay.de prices in October 2026. Plus the filament you print it from.
Which package should I take?
The €49 one-printer package closed to new purchases after 31 October 2026 (Amsterdam time). “I want the project” (€89) covers both printers, future printer adaptations, Discord and the Workshop; STEP files arrive with the first stable release. You can also buy the A1 mini top bar on its own for €10, credited toward a later upgrade. Existing one-printer licences keep their rights and can still upgrade to the full project for €40.
Does one licence cover both the A1 and the A1 mini?
An existing one-printer licence covers the model chosen at checkout, including every unit of it you own. The full project covers both models and future printer adaptations. One licence is for one person; earlier licences keep their original coverage.
Can I get a refund?
Refunds follow EU consumer rules. The refund policy explains when you can get one and how to ask.
Eight filaments.
The extruder you already own.
Digital files · VAT included · one licence per person
Choose your package · from €89MechAMS V2.2.5From €89