Heat sink leakage of E3D V6 Hotend

On May 2018, I replaced 0.4 mm nozzle with 0.8 mm Volcano nozzle.  Two days ago my Prusa i3 MK2 started to develop non-stop printing failure. Slic3r setting could not solve the issue. Last night I noticed that the idler bearing was not turning which supposedly rotate with finger press.

After I disassembled the hotend, I inspected all components thoroughly.  There was tiny leakage at the bottom of heat sink where the PTFE tube seats on. The black spot was leakage of ABS filament I have used for the last two days.

It pushes the PTFE tube up and removes clearance of the idler bearing of extruder. It causes reduction of pressure between extruder gear and the idler bearing, eventually drops the flow rate of filament and produces printing failure.

How to prevent it?


About janpenguin

Email: k2.mountain [at] gmail [dot] com Every content on the blog is made by Free and Open Source Software in GNU/Linux.
This entry was posted in Reprap 3D Printer, Uncategorized and tagged , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s