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Wrong size J-head

Posted by Nununugent 
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Nununugent
Wrong size J-head
December 28, 2013 09:47AM
My new J-head arrived and it is for 3mm filament. I only have 1.75mm. I have some PTFE tube with a 1.75mm ID but the OD is too big to fit in the 3mm nozzle. I am thinking of mounting the PTFE in my bench motor and sanding it down until it fits in the nozzle. Would this be a mistake?
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uncle_bob
Re: Wrong size J-head
December 28, 2013 11:19AM
This would be a mistake.

Either switch to 3mm (fairly easy to do) or get one that's the right size.
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SamS
Re: Wrong size J-head
December 28, 2013 10:37PM
E-mail the J-head guy, assuming you bought an actual J-head. They can sell you a little insert I'm sure for pretty cheap, that's all it'll take.
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Nununugent
Re: Wrong size J-head
December 30, 2013 08:36PM
I had some 4mm PTFE, and I saw a web page where a guy told how he drilled up the red PTFE and fit the 4mm. I used my lathe, ant the 4mm was really 3.92mm so I drilled it up to 3.87mm and press fit my PTFE. Two prints later it is working like a charm. Fingers crossed.
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Nununugent
Re: Wrong size J-head
January 06, 2014 10:31PM
Many prints later it is still going strong!
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