Capricorn PTFE Tubing XS- Low Friction
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This is from captubes.com web site https://www.captubes.com/safety.html
Seems like running it inside a hot end is not recommended, not is printing at higher temperatures.
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Plenty of hotends have PTFE going to the nozzle. I'd rather have high temperature PTFE…
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Has anyone found a UK source for the TL version? I have short Bowden tubes so would prefer to sacrifice the smaller inner diameter of the XS version for the transparency that the TL version offers. I once had something go horribly wrong with one of my Diamond hot ends and had filament from one input back feeding up another. I only noticed it because I was using transparent PTFE. Plus it's easy to see at a glance that I've loaded the correct colour filament into the correct input.
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Well, I'm using regular PTFE with Lite6, and I don't go above 230°C. Looks like the Capricorn can go a little further. But OK, I won't try 300°C! 250°C is enough for a large choice of filaments.
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Another advantage of capricorn XS tube is it's rated to 340 deg c. I use it in an e3d lite6, no messing around with heat creep.
Not true! It has a rated working temperature of 260C. Please do not attempt to use it (or any other PTFE tube) over 260C!
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Another link to captube's site https://www.captubes.com/specs.html. They show the Melting Point as 300 deg C for the TL and UP TO 340 deg C for the XS version (so it'll melt somewhere below 340deg C). The melting point is a lot different than being "rated as".
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To emphasise this even more. PTFE has some very nasty thermal break down products:
https://en.wikipedia.org/wiki/Polytetrafluoroethylene#Safety
Do not use above the rated temperature!
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If anyone is planning on using the capricorn tube with a Bondtech you might want to consider using the bowden adapter rather than the built in adapter, On my bondtech the tube was frequently pushed out of the built-in bowden connector (which damages the tube) but on the adapter its perfect.
I have a bondtech, can you show me what you mean?
I use this on the output end
http://ooznest.co.uk/image/cache/data/products/E3D-Online/Titan/Bowden-Adaptor-351x470.jpg
Yep that should work fine, thats optional on the bondtech for bowden tubes, its the other side that I had the issues with.
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Another link to captube's site https://www.captubes.com/specs.html. They show the Melting Point as 300 deg C for the TL and UP TO 340 deg C for the XS version (so it'll melt somewhere below 340deg C). The melting point is a lot different than being "rated as".
Normal PTFE has a melting point of 220 deg c (plenty of PLA will use that temp) and we get no issues…
Not trying to start a flame war, just pointing out that it has a higher resistance to temp and to date I have noticed no degradation at @290 deg c
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…...............
Normal PTFE has a melting point of 220 deg c (plenty of PLA will use that temp) and we get no issues...Not trying to start a flame war, just pointing out that it has a higher resistance to temp and to date I have noticed no degradation at @290 deg c
I'm not going to argue as everything that needs to be said has been said (specifically check Tony's post about the nasty gases). I would however question where you found the melting point of PTFE to be 220 deg C. Every source I've looked states the melting point of PTFE to be 327 deg C.
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totalitarian, if you like getting sick or dying of poisonous gases, it is fine. But please don't spew life threatening misinformation on public forums. There are lots of guys tinkering with these toys, including kids.
