Nozzle X - extra stringy....?

Discussion in 'Nozzles: sizes; materials; swapping.' started by alphabeta77, Aug 16, 2019.

  1. alphabeta77

    alphabeta77 Member

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    Hi folks,

    Just installed a 0.4mm Nozzle X that I bought a while back - find it to be extremely stringy in prints (literally swapped from a standard nozzle and get this result, so fairly sure it's the nozzle itself).

    Can I ask - is there usually a difference in temp that this nozzle prefers? Be good to know if it's usually +/- 10C to a standard nozzle etc

    Just printing standard Prusament PLA, so nothing exotic...
     
  2. Tony MacDonald

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    Wow... No response?
     
  3. Chris Emory

    Chris Emory Member

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    I purchased a Nozzle-X a few weeks ago and never could get the filament to lay down. Went through an entire roll changing everything I could think of but nothing would stick to the bed. Put the brass nozzle back in and the first print laid down. Sure would like to know what I am doing wrong with the Nozzle-X. Too expensive to be laying on my desk lol
     
  4. Greg Holloway

    Greg Holloway Administrator
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    We do usually have to trial upping the temperature by up to 10 degrees due to thermal conductivity being less than brass
     
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  5. Jai Stanley

    Jai Stanley Well-Known Member

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    I've noticed this too. Very much so in fact... I get some very good result with the nozzle X's I have fitted to mine, but when going from these tool heads to ones with copper nozzles: I have to completely re-do calibrations/filament settings.

    I wonder what the general effect of the poorer thermal conductivity is? I got the copper nozzles for printing very high temperature materials, but now wonder how the printing process is effected by having the conductivity lower. Is it just a matter of setting the temperature higher, or will the material melt in a different way as it goes through the nozzle? Another investigation I don't really have time for ATM I'm afraid.
     
  6. Chris Emory

    Chris Emory Member

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    I tried a range of different temps up to 250. Using PETG btw, and also tried 3 different rolls.
     
  7. Chris Emory

    Chris Emory Member

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    I can not explain it but I decided to try the Nozzle X again, made no changes at all from the settings I was using with the brass nozzle, and it is now printing flawlessly. Way better than the brass nozzle was printing! I did nothing different this time than the first time I tried to use it. Extremely satisfied with the Nozzle X
     
  8. Jai Stanley

    Jai Stanley Well-Known Member

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    Maybe it had machining oil on it that has now burnt off? I know I get funny smells from my hot ends the first time I use them.
     
  9. Chris Emory

    Chris Emory Member

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    I went too far with flawlessly. Big pieces with low detail were flawless. Smaller pieces with higher detail and supports are far from flawless. The supports in particular are strange. They may start good and randomly go bad. Sometimes they finish good but more times than not if they even do print they are a mess
     

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