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My hotend just destroyed itself.


iccherry
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Posted · My hotend just destroyed itself.

Along with the bottom end of the head unit. Printing ASA, and lost bed adhesion. Melted filament got pushed up into the silicone shield, pushed it out of the way, and encased the hotend. Had to take the whole head assembly apart to get it out, which also required destroying some sensor wires (encased in ASA). I cannot get the hotend out of the metal bottom plate. Does anyone have any ideas on what I might try?

 

I guess I should write off the hotend, and just cut it out or something? Or maybe put it in the oven to heat up the ASA and pull it out with pliers?

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    Posted · My hotend just destroyed itself.

    Yes ASA is a devil's stuff and the printcore is history.

     

    For the ASA on the flap, a pair of pliers and a hot air dryer will help. I would try to exert as little force on the flap as possible. If the something is bent, the closing of the flap no longer works.


    I would put the plate in a vise. Then I would use a hot air gun to heat the plate and pull out the print core at the same time. 

     

    Wish you much success and also some luck!

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    Posted · My hotend just destroyed itself.
    1 hour ago, UlrichC-DE said:

    Yes ASA is a devil's stuff and the printcore is history.

     

    For the ASA on the flap, a pair of pliers and a hot air dryer will help. I would try to exert as little force on the flap as possible. If the something is bent, the closing of the flap no longer works.


    I would put the plate in a vise. Then I would use a hot air gun to heat the plate and pull out the print core at the same time. 

     

    Wish you much success and also some luck!

     

    Thanks! I was able to get it out with a vise. The printcore is indeed ruined, as is the capacitive sensor. Looks like I'm in for about  $250 worth of replacement parts, but the other printcore and the rest of the head was undamaged, thankfully.

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    Posted · My hotend just destroyed itself.

    Thanks anyway for your report. This has reminded me again to pay a little more attention to the Athesion in the near future.

     

    Hope the damage continues to keep within limits.

     

    Many greetings

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