Fantastic! Thanks for the tip and included pictures. Did you make these yesterday or are they on the internet? They should make it into the wiki/ troubleshooting.
I'll try this out tonight and let you know if it worked for me.
Fantastic! Thanks for the tip and included pictures. Did you make these yesterday or are they on the internet? They should make it into the wiki/ troubleshooting.
I'll try this out tonight and let you know if it worked for me.
Fantastic! Thanks for the tip and included pictures. Did you make these yesterday or are they on the internet? They should make it into the wiki/ troubleshooting
I just shot them this afternoon, specifically for this purpose... if they want to migrate into the wiki, fine by me.
Let us know if it helps.
A few weeks later now. Just wanted to let you know this solution really works for me. No jamming since updated.
Nice mod, I forwarded this to the Ultimaker team!
oh, cool... I thought you ARE the UM team... but so far this has been the easiest fix to fix the way too common jamming issue...
Thanks for the hack, I've created a "Jamming" page on the wiki -
http://wiki.ultimaker.com/Jamming
- explaining how I unmount the extruder to remove the jammed PLA by tools and including your hack.
It might not be the best method, and it's a bit long (20-30 min), but it has helped me twice last weekend
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joergen 2
There are a couple of things inside the hot end that needs to be solid and never move: one is the PTFT tube inside the PEEK, and the PTFT retainer ring/clip above (if the ring/clip does not support the bowden tube anymore, print some reinforcement:
http://www.thingiverse.com/thing:11864
).
The PTFT needs to make a solid flat connection to the brass tube inside the PEEK:
As you can see it is very difficult to get a perfect perpendicular cut/connection, and if the PTFT isn't pressed hard enough against the brass, plastic will leak, and the problems start.
you can solve this by drilling out some of the bowden with a 4.5mm drill (by hand), not much deeper than 0.5mm (depending on how far the brass tube extends out of the PEEK):
(In this example I drilled a bit too deep, but you can shave off some of the PTFT to lower the depth of the bevel.)
Now the Brass tube can slide into the PTFT ever so slightly (especially if your brass tube thread is turned down a bit), making a much better seal:
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