IDEAS DISCUSSION Clever3D PEI coated aluminum bed

Discussion in 'Guides, Mods, and Upgrades' started by JesperJuul, Jun 21, 2016.

  1. JesperJuul

    JesperJuul Well-Known Member

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    Definitely preheat to insure, that the print surface has the same temp as the bedheater.
     
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  2. Ephemeris

    Ephemeris Well-Known Member

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    What @JesperJuul said is so true, especially at higher temps. You can't just launch the gcode and hope the bed gets there in time! You must preheat.
     
  3. Alex9779

    Alex9779 Moderator
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    In time of what? Even if you wait for the bed to reach temp before starting to heat the extruders?
     
  4. fpex

    fpex Well-Known Member

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    It makes little sense guys, the printer always waits for the bed ....
     
  5. Ephemeris

    Ephemeris Well-Known Member

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    What I'm saying that the there is noticeable lag between the thermistor indicated temperature on the PCB and the aluminum bed. If you doubt me set the bed temperature manually and touch the bed periodically as the indicated temperature climbs. Admittedly this will vary from BigBox to BigBox since the contact area between the flexible PCB and the aluminum bed plate will vary.
     
  6. Alex9779

    Alex9779 Moderator
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    I have my "bed lifter" to press the PCB against the plate, that way the temperature reading increases much much slower than when I remove the "bed lifter" and the lag is drastically reduced. So I am pretty good starting prints when the printer waited on the temp...
     
  7. fpex

    fpex Well-Known Member

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    I make sure the PCB is in full contact of the BED plus always set the temp on first couple of layers 5% more.
     
  8. fpex

    fpex Well-Known Member

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    btw how do you guys clean it?
    My BB is down (waiting for replacement titan hobbs) but better ask before I do any damage!
     
  9. Chase.Wichert

    Chase.Wichert Well-Known Member

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    I clean my regular PEI sheet with alcohol. And sometimes Acetone when it is cold.
     
  10. Alex9779

    Alex9779 Moderator
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    Acetone too...
     
  11. Alex9779

    Alex9779 Moderator
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  12. Chase.Wichert

    Chase.Wichert Well-Known Member

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    @Alex9779 Do you even read what I post? lol
     
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  13. Alex9779

    Alex9779 Moderator
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    For cleaning it says use Acetone or break cleaner, no sharp things to get parts off...
     
  14. Alex9779

    Alex9779 Moderator
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    Me? Yes that's why I wrote 'too'...
     
  15. Chase.Wichert

    Chase.Wichert Well-Known Member

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    Ohh I thought you were selective reading like my wife selective listens.

    I thought you were adding acetone to the list

    Me - Alcohol
    You - Acetone too
     
  16. Alex9779

    Alex9779 Moderator
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    Too because you mentioned Acetone already...
     
  17. Chase.Wichert

    Chase.Wichert Well-Known Member

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    Yes, meaning you use acetone too

    Okay, back to the topic at hand.
     
  18. Alex9779

    Alex9779 Moderator
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    Yes and we filling up the thread with junk :D I don't use alcohol because I'd rather drink it :p
     
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  19. JesperJuul

    JesperJuul Well-Known Member

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    LOL :)
     
  20. Chase.Wichert

    Chase.Wichert Well-Known Member

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    So @Alex9779 have you gotten the parts so stuck that you can't remove them? I do that sometimes on my PEI, whether it be the first layer is squished too much, the bed is too hot, or I am printing too slow. Or do they just pop off regardless?
     

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