PTFE-lined heatbreak?

Discussion in 'E3D-v6 and Lite6' started by cds333, Dec 4, 2019.

  1. cds333

    cds333 New Member

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    What is the point of these things? When would one want to use them?
     
  2. Greg Holloway

    Greg Holloway Administrator
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    they are cheap, and I wouldn't want to use one.
     
  3. mhe

    mhe Well-Known Member

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    Never. The whole point of an all-metal heatbreak is to achieve higher temperatures and have a more precise inner diameter. Putting a PTFE tube in there defeats the purpose altogether. It is just silly.
     
  4. Nibbels

    Nibbels Well-Known Member

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    Nah its not silly.

    There is a case. If you only plan to use flex at a direct drive for example, then you can buy all hotend parts as the same diameter and have one single ptfe tubing down until you reach the hot zone. Flex is mostly < 240°C
    I very much like the e3d lite cooler for that.

    Or you use the hemera. (-> but not at 3mm)

    What does not make sense for me is using a small cut ptfe only within the heatbreak. The gain in better steering comes when you have one tubing without any breaks / grooves.
     
  5. mhe

    mhe Well-Known Member

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    And if you machine the mid section of that heat break smaller and use proper thermal paste on the upper threads, you'll be way below any problematic temperatures even for flexibles. And you can machine the inner diameter of the heat break a lot closer to spec than the PTFE liner in these is. I'd somewhat understand it if that was something high class like Capricorn PTFE, but this cheap stuff, I am really really sceptical. Also, you can coat the heat break in a way that it doesn't stick. But in the end, try it out. I wouldn't bother, but that is just my personal opinion and I for sure don't know everything.
     
  6. Daniel Rock

    Daniel Rock Well-Known Member
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    The lite 6 was introduced for beginner users who will only be using filaments such as PLA and ABS, it has an integrated heatbreak making the hot tightening process easier for those who are a little less experience with hands on / practice tasks.

    It’s very much an entry level product, not targeted towards those interested in experimenting with different filament types.
     
  7. Lord Binky

    Lord Binky Member

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