Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  

UM Original Hot End Problem

Recommended Posts

Hi all,

since a couple of weeks I have a strange problem on my UMO hotend.

When the filament cooled down after a print and is re-heated I have massive problems to remove it from the print head. There is massive pull required to remove the filament.

If I leave the filament in the hotend and start a new print there will be no material flow until I remove the filament, cut off the slightly thicker end (with a small rim at the end) and re-install the filament. After this procedure the print runs without problems.

This problem haven't occured within the first 6 months of printing. So I think something must be wrong inside of the hotend. There are no leaks or broken parts visible...

Any help is appreciated :)




Share this post

Link to post
Share on other sites

I guess this has to do with the teflon part. Yes, this also happens to the UMO… at the connection with the peek a little bit of material disappears. When you take the hot end apart the teflon has a brown brim.

Or there could be a little gap between the hot end parts bowden-teflon-peek-brass, not necessarily ending up with leeks.

Evidence can be seen when you pull the pla and see a thicker part at the end.


Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

[[Template core/front/global/_customFooter does not exist. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!