PTC thread size?

Discussion in 'E3D-v6 and Lite6' started by mhackney, Mar 4, 2014.

  1. mhackney

    mhackney Well-Known Member

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    Does anyone know what size threads the PTC couplers are - the site says the PTC coupling is 1/8" BSPT but they really look like non-tapered BSP to me. I am planning to replace the connectors on all 4 of my extruders to use the couplers with my Kraken and also my E3D V5 and need to order the correct tap.

    Thanks!
    Michael
     
  2. elmoret

    elmoret Administrator

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    Per Sanjay:

     
  3. Josh

    Josh Administrator
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    Hi Michael,

    This is actually quite a complicated (and somewhat boring) story which I will explain for the benefit of yourself and anyone else wondering.

    All the threads in the top of our heat sinks are 1/8" BSPP.

    For 1.75mm filament everything is fine since it is possible to get couplings in BSPP, however for 3mm filament we can only get BSPT couplings. We have however found a manufacturer that makes the BSPT threads in such a way that they fit into our BSPP-Tapped holes, but we can't advertise them as BSPP, because technically they are not..

    This is the case at both ends of the Bowden tubing since we supply a pair of similar couplings.

    It is a bit of a confusing state of affairs and is something that we are changing in future revisions!

    Regards,
    Josh
     
  4. mhackney

    mhackney Well-Known Member

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    Thanks! I have what I needed to know.

    cheers,
    Michael
     

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