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Does this hot end diameter match my 1.75mm filament?

Posted by ghobbs 
Does this hot end diameter match my 1.75mm filament?
March 27, 2014 06:23PM
My J-Head doesn't seem to be working correctly; it takes a lot of force to get the plastic to go through, and all I've managed to get through is maybe 1-2mm. I've looked around for images to confirm I was sent the right J-Head size but haven't been able to find anything that would answer my question. I'm suspicious because the hole in the top of the hot end is a lot bigger than the filament. I'd greatly appreciate it if someone here could take a look at my hot end and filament and tell me whether a size mismatch is a problem.
Attachments:
open | download - photo.jpg (258.9 KB)
Re: Does this hot end diameter match my 1.75mm filament?
March 27, 2014 06:46PM
Do you have a caliper to measure the filament size?

Looks like 1.75mm filament going into a 3mm Jhead.
Re: Does this hot end diameter match my 1.75mm filament?
March 27, 2014 06:48PM
for 1.75mm the bore should be 2mm if it looks way too big for 1.75mm chances are it's a 3mm hotend




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Re: Does this hot end diameter match my 1.75mm filament?
March 27, 2014 06:48PM
The filament is 1.75mm, so it sounds like it's a 3mm Jhead. Thanks!
Re: Does this hot end diameter match my 1.75mm filament?
March 27, 2014 07:33PM
That also looks to be a knock-off J-Head. I would expect problems even with 3mm filament.


Cameron

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