These little adapters have now officially saved my butt and my feeders are working so much better now!
Time will tell but I’ll run a few long term prints and see!
Your support and feedback is highly appreciated! So far i haven’t heard any negative responses and still testing the final design but it’s looking like they will functionally work!
v2 now uploaded with a locking lip on inside to help hold in place!
These are a great idea. I saw one user who had worn groves in the actual AMS feeder holes from a very long print. This use of PTFE tube will definitely save that.
Thanks
There are few issues with this. As shown, it looks like Capricorn tubing which has a small inner diameter (<2 mm) and resists flexing. I had several spools that would not feed in this arrangement when nearing empty - ABS and PETG. I switched to the Bambu Lab PTFE with a large inner diameter (2.5 mm) and shortened to have about 1 mm above the opening. This worked well with my ABS and PETG filaments. As a test, I then tried PA-CF from Bambu Lab. It absolutely refused to feed reliably in this arrangement. Removing the PTFE allowed the PA-CF to feed, but bypasses some of the intent to help reduce wear on the first stage feeder input opening. I’m running about 250 g of PA-CF now and will check the amount of wear on the cap versus the input opening. This may just need to treated as a consumable for the feeder.
