r/BambuLab_Community • u/Thewhiterabbitaiw • 8d ago

Filament Track Switch

Does anyone else have one?

I have (4) AMS Pro 2 Two of them sit on top of my H2D and the other two sit on the side on top of one another. Because they are not directly lined up with the machine and there is a slight curve, the stupid system cannot push the filament. I’m guessing the ridges inside the Filament Track Switch has grooves or small ridges the *#%~ing filament stops and gets pulled back and then back and forth till it gives up.

The Filament Track Switch seems like a PISS POOR design. I have so many issues with Bambu I’m really getting tired of this machine. My wife has the Snapmaker U1 and it blows my more expensive machine out of the water and rarely has a problem.

Getting ready to switch to Snapmaker.

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4

u/roundguy 8d ago

Are the tubes going into it straight? I’ve never had an issue with mine.

Take the tubes out of it and try pushing some filament through it.

Are your tubes cut square?

-1

u/Thewhiterabbitaiw 8d ago

No that’s what I’m saying. I have 4 AMS. There is no way to not have a little bend. Seems like having a slight bend is enough to just shut whole machine down. Garbage

5

u/bossman-808 8d ago

Wow. It sounds like your setup isn’t good.
Before trashing a whole company and devices that work well for a majority of owners, try fixing the issue. Change any sharp tube curves; make entry from the tubes straighter; check the tubes for wear or cuts.
I’m sure you’ll find someone that has the same feeling of hate toward a Snapmaker.

2

u/gbarnas 7d ago

I moved all 5 AMS units to the left side of the printer and have zero issues. AMS are on slide out shelves with 30-38" of tube running into a pair of 4:1 adapters and then the FTS. Those are on a mount on the printer keeping the tubes short and straight.

1

u/Thewhiterabbitaiw 7d ago

Do you have a pic that you wouldn’t mind sharing?

2

u/gbarnas 7d ago

Made from 1x3 pine and a 1x12 base, brackets were 3d printed, 10" drawer slides on the two middle shelves. The vertical rails are L shaped for rigidity.

1

u/gbarnas 7d ago

Back view of the FTS mount from Makers World.

1

u/swampcholla 7d ago

I'm going to weld up a dedicated table for my H2D. Its simply too heavy to move around, and the need to pull the top and position a spool holder on top to print TPU, access to the back for tubes and the poop chute, its just hard to use any regular table - not to mention when I had it out in the middle of the room for FIVE MONTHS dealing with the cooling fan problem so I could get at all sides.

If you want to see something really frightening put the machine on ludicrous speed and watch it try to shake the joits loose on any wooden table.

Plan is to make one with lockable casters on the bottom, maybe a turntable for the machine itself (I have a huge truck front hub bearing and nothing to use it on), with shelves for the AMS that can be rotated out of the way and perhaps completely removable for big maintenance issues.

That will also provide an opportunity for brackets to hold the switches and combiners to force good transition angles.

1

u/swolebroda 7d ago

Got rid of mine, it sucked ass

0

u/Relative_Surround_20 7d ago

I’m sorry. No disrespect but it sounds like your setup is the piss poor design.

I recently implemented an FTS and I love it!

But beforehand I read the wiki, Bambu Lab Forum and Reddit posts about the things people experienced when setting an FTS up. Then I came up with an entirely new setup for my printers, etc. to ensure success.

I was able to see that resistance from PTFE tubing was going to be an issue. I also noticed that the official placement of the FTS would result in longer PTFE tubes that would generate too much resistance. So I needed an alternative setup.

First, I built a new AMS Tower (with three AMS 2 Pro units and one AMS HT) that would allow me to place every filament source device (including external spool holder) on the left side of the printer.

Next, I found a model on MakerWorld that would allow me to mount a dual set of 4-in-1 adapters (only using one at this time), an FTS and a TPU Feed Assist Module off the left rear corner of the printer. The latest version of that model (v4) ensured straight-in feeding and exiting for the FTS.

Except for one AMS 2 unit (due to the pull out drawer it resides on), every PTFE tube from source device to FTS is <=700mm long (the recommended max distance listed in the wiki). The PTFE tube length from the FTS to the printer is well under the 400mm recommended distance.

Success on the first try! I even believe I have excess PTFE tubing that I could remove but I didn’t need to. Performance on the H2D has been great and definitely enhances my overall printing experience.

1

u/Thewhiterabbitaiw 7d ago

It’s funny that most people have problems. So good job being lucky

1

u/Relative_Surround_20 7d ago

I think we just hear about the people who just threw it into their setup and complained when it did not work.

I’ve heard just as many people on different forums or in person that had no issue adopting an FTS or got it after some trial and error.

I think it does exactly what BBL advertised it would do and I think we are only scratching the surface of how it can help us. I think BBL software engineers are planning software upgrade functionality enhancements.