u/VariousAvocado4127

The attached video shows the mechams system functioning. Its not sped up, the oozing seen is due to a too large difference between the unload and load length, which can be modified in the gcode to basically 0. All other movements etc in regards to the swapping is customizable. I think a 1 to 1.5 minute swap is achievable.

For more info see our other socials:

SipersMechatronics Website

Instagram

Tiktok

Discord (coming later today)

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I have had an overall bad experience interacting on reddit in regards to my project.

I have therefore decided that this will be the last post on reddit related to MechAMS. The project is not over and I will continue working and expanding it to other printers with more accessories etc. Follow the other socials to stay posted for that!

Hope this video is not too fast, i had to play with the lights to get the black to show a little, thought it would be visible in white, gray, dark gray and black. Please be kind :)

-What it is

MechAMS is a fully 3D-printed automatic material system for the Bambu Lab A1.

No electronics, no boards, no wiring — just mechanics.

-Why I built it

Most AMS systems rely heavily on electronics and cost.

I wanted to explore a simpler approach that’s cheaper, more customizable, and honestly just more fun to tinker with.

-How it works (short version)

8 filament slots

Mechanical switching driven by printer movement

Custom G-code handles the process

Fully printable and modular

-Current state

The system is working reliably and close to launch.

Right now I’m mainly finishing instructions, documentation, and polishing the overall experience.

-What’s coming next

Initial launch

Proper long-form videos after launch

A1 Mini version

Launchpad + “bug bounty” style system to improve and scale faster

Ongoing revisions based on feedback

!Important note

This isn’t meant to replace existing AMS systems.

It’s a different approach — and I’m also exploring ways to combine systems.

-Feedback welcome

Let me know what you think, ideas, concerns, or questions.

I’m collecting everything into a proper FAQ so it’s all in one place

This animation shows how the docking and feeding of filament works. Unloading works the same way, just backwards. Ofcourse there would normally be a belt and ptfe tubes installed. Cheers!🍻

Hey everyone,

So I've been working on something I think a lot of you will find interesting.

It's called MechAMS: a fully mechanical, entirely 3D-printed multi-filament system that works by using the printhead's position to engage filament slots via a crown gear. The extruder motor already on your toolhead drives filament in and out through a belt and gear system. Slot selection is purely positional, controlled by G-code.

No wiring. No sensors. No extra motors.

(For video footage see instagram.com/sipersmechatronics )

Here's the rundown:

• 4 to 8 filament slots (4 standard, 5+ with Y-splitters)
• Entirely 3D printable -- PLA for the body and gears, TPU 95A for the belt and filament drive gears
• Only non-printed part needed: PTFE tubing
• Works with the latest version of Bambu Studio via a custom printer preset (one-time setup)
• Non-destructive -- regular printing still works with it installed, and your printer can be fully restored to stock
• Fully tunable via G-code (purge length, retraction, wiping, etc.), and a UI will be available on the website for those who'd rather not touch G-code
• A1 series launching end of month, A1 mini coming next, more printers to follow
• regular AMS/AMS Lite compatibility is in the works too

Pricing: Dropping soon. Bigger audience = lower price, so spread the word if you're interested.

Everything (printable files, G-code, instructions, and access to the G-code generator) will be available at sipersmechatronics.com -- currently closed until launch.

Happy to answer questions in the comments!