Prusa Nozzle MKII October 02, 2013 08:06PM |
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Re: Prusa Nozzle MKII October 04, 2013 03:46PM |
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Re: Prusa Nozzle MKII November 30, 2013 08:53AM |
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Quote
thej
my j-head nozzle broke so i though an upgrade to the Prusa nozzle MKII would be great. Or not?
I have been trying to print hole day but the filament keeps jamming.
I am printing PLA at 220-240 degrees have two fans cooling the heatsink.... still jamming...
anyone here having successful prints with PLA and prusa nozzle? I am really frustrated.
Re: Prusa Nozzle MKII December 17, 2013 09:27AM |
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Re: Prusa Nozzle MKII December 17, 2013 01:04PM |
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Quote
Snowfly
Quote
thej
my j-head nozzle broke so i though an upgrade to the Prusa nozzle MKII would be great. Or not?
I have been trying to print hole day but the filament keeps jamming.
I am printing PLA at 220-240 degrees have two fans cooling the heatsink.... still jamming...
anyone here having successful prints with PLA and prusa nozzle? I am really frustrated.
Hi...
Have same problem with prusa nozzle MK II and I think I finally figured out whats causing it. Cause I have J-Head too it was easy to make some comparisions.
After countless of jamming/dismantle/cleaning for Prusa Nozzle I think I finally figured out whats causing the jam's.
Now look the attached photo.
There will be 2mm gap when everything is put together. For J-Head this ain't a problem cause that part is made of plastic, but for prusa nozzle this is big problem cause it's made from metal.
Heat accumulates on the 2mm gap and one point it will start slowly slicing filament with its edge and creates jam.
So from my research I conclude removing the gap should neutralize the jamming problems. Gona get back to confirm this when I get my J-Head up and running again and making new mount without the gap.
Re: Prusa Nozzle MKII December 17, 2013 01:20PM |
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Re: Prusa Nozzle MKII December 17, 2013 01:29PM |
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Quote
Yvan
Isn't it rather evident why the Prusa design is so prone to jams? Seems rather apparent to me...?
Re: Prusa Nozzle MKII December 17, 2013 03:13PM |
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Re: Prusa Nozzle MKII December 17, 2013 06:47PM |
Registered: 11 years ago Posts: 246 |
Quote
Yvan
Hey Eric, how are your projects going?
The Pico guys on Kickstarter have a nice thermal map of their hot end. In my mind is shows how things should be, heat flow wise. For that general style or layout anyways.
I should add the Pico heat zone is very long, so we will see how that works out in the real world.