Hello everyone,
should all PTFE tubes be replaced in the same way, including in the AMS and in the printer? Are the 4 metres from the shop sufficient?
Thank you!
For ams I usually use 1-2 dedicated slots for more abresive stuff and only replace those when needed. 4M is more than enough for printer & ams
Idk what you mean but it’s good practice to change them on both ams and printer if you start changing one of them like how you don’t change 1 single tyre on your car. Ams insides will not get used the same amount if you also put more abresive filament to dedicated spots but if you did not might as well change all
Then I will replace them all soon. I’ve only replaced one tube now, from the spare pieces that came with the printer. I only have 500g of PAHT-CF and PLA-CF (which came with the printer and I don’t think it was a whole kilogramme). It wears through very quickly, I wouldn’t have thought. Maybe I really shouldn’t send CF filaments through the AMS.
I run them on slot 1 for cheaper replacement for when I eventually need to change the feeder module as well. PTFE tubes aren’t expensive but the whole process of opening the ams up takes a couple of min for sure. If you haven’t received any retraction/feed errors yet bc of worn out tubes, you probably don’t use them very much, should be fine making a dedicated ams slot for them and then switch fully to external loading when you use them more. Also a good idea to keep in mind when I say only change slot 1 tubes, that also includes the longest ptfe that goes from the back of ams to printer which gets used by all slots.
PTFE tubes are consumables. Abrasive filament like CF and glitter will eat them much faster than regular PLA. They are also dirt cheap and very easy to swap out. Bambu sells a pre-cut set for the AMS internal tubes for $3.99 USD
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doesn’t it make more sense to get the longest one (4m) and cut it to size, which I did. Ptfe tubing doesn’t take much space, easy to store it after cutting the needed amount
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Sure, assuming you have the means to accurately cut the material. The AMS can be finicky with the internal tube runs with more than one mod project out there to help eliminate strain on the filament path. Tubes have to be cut nice and square with no deformation to their shape. I use this guide to get a square cut along with the scraper blade that came with the X1 mounted to the Bambu built-in scraper model that shipped on the printer
https://www.printables.com/model/236821-ptfe-cutter/comments/808729
The inexpensive pre-cut lengths seem like an easy option too.
There are special cutting tools for PTFE hoses. I also use these. Because they cut very well. If it’s not quite straight, I’ve also helped with a nail file and then widened the end with an Allen key, which also works.
I just needed to know whether the 4 metres were enough for everything. Then I’ll replace everything once when I have time. I’ll also replace the PTFE tube to the print head, which will look similar, but it’s not worn through yet.
4m is a lot. Inside the AMS is about 4 feet and in the printer maybe 2 feet. Another couple of feet to get the spring thing and about all that’s left is going from the AMS to the spring thing but that depends on the setup.
About that tube in the printer, it rubs against the glass. I was surprised that mine has a big flat spot along its length from rubbing against the glass. One person here said theirs wore through and the filament popped out and stopped feeding. There are little clips in MW you can print that keep the tupe from rubbing on the glass lid.
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