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broken jhead

i bought the mendel90 complete kit. didnt have any problems with it till today: because i had problem with abs sticking to the heated bed i bought some blue masker tape and some white pe tape. the...

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Re: broken jhead

Where are you based in the world? I have a spare one you can have.

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Re: broken jhead

You can dissolve the ABS out the head using acetone to check if the threads are damaged. At what temperature were printing?

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Re: broken jhead

I was printing at 235, I don't think the temperature was the problem. Something got stuck on the head. i'm from Romania. What is the nozzle size? Thank you in advance best regards

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Re: broken jhead

I wasn't suggesting that temperature was the problem, but if it was sufficiently high then the PEEK have simply softened enough to allow the brass nozzle to pop off without damaging the threads. I'm...

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Re: broken jhead

so is it ok to put the plastic part of the jhead in acetone? nothing bad will happen? i'm going to try to remove the brass head, and put the rest in acetone. it would be great if i could recover it,...

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Re: broken jhead

Yup. PEEK is resistant to acetone. Don't worry, you're not the first to have done this... 8-)

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Re: broken jhead

Hi Klayus, Unfortunately some J-Heads we received have a manufacturing fault which makes the thread too loose. PM me and we will send a replacement.

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Re: broken jhead

Hello, Here is a description of the PEEK failure issue: [jheadnozzle.blogspot.com] If anyone experiences such a problem, and they were made by me, please contact me for a replacement. Regards, Brian

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Re: broken jhead

Hi Have the same thing, I have tried screwing it back on a few times but it just keeps coming off after a few min of printing. Is this an issue with the head or the holder?

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Re: broken jhead

Hi Mark, It is the PEEK holder that has oversized threads. We will send a replacement hot end on Monday.

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