I keep getting a jam where the PTFE tube meets the top of the v6 hot end. I have the PTFE tube all the away in but for some reason it gets a bulge at that spot and will stop printing. It happens with or without retraction. Any ideas?
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I am thinking you mean the middle of the cold end instead of the hot end; above the top of the heat break. Could you add a sketch? Sometimes chamfering the tube helps! – 0scar Dec 24 '19 at 13:54
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Do you have cooling fan for the e3d heatsink ? – Mayoogh Girish Dec 28 '19 at 14:00
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Can you show a picture of your setup? – Trish Jan 24 '20 at 15:04
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Filament sometimes get stuck on the rim of the PTFE tubes inside the heat sink. Josef Prusa from Prusa Research has published a document on how you should chamfer the PTFE tubes for his printers:
Maybe chamfering your tubes works for you too.
0scar
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Thank you everyone for your help. Sorry I took so long to respond. I didn't get a notification of your responses. I'd like to to try this chamfer of the ptfe tube but this seems like a difficult thing to pull off accurately with a tiny round tube. Do you think a pencil sharpener would work? – Hellrazor Jan 20 '20 at 15:46
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@Hellrazor You can find printed objects on Thingiverse, if you are still able to print small parts; e.g. [this](https://www.thingiverse.com/thing:3121653). – 0scar Jan 20 '20 at 17:46