Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
alaris2

cleaning PLA off threads (v2 hotend)

Recommended Posts

I saw someone having problems with re-using a heater block with the new hotend but there was PLA on the threads.

I also remembered reading an excellent article from Bertho about dissolving PLA with caustic soda.

I think I remember someone suggesting to use this method to clean the parts prior to assembly.

I just thought I should mention. don't try this. I forgot aluminum reacts big time with caustic soda and put the v2 hotend in the ultrasonic bath..

on the plus side, I have enough hydrogen now to power a fleet of fuel cell cars..

any safer ways to remove the PLA welcome (just heating it doesn't seem to work very well when it's stuck in nozzles and threads)

Share this post


Link to post
Share on other sites
any safer ways to remove the PLA welcome (just heating it doesn't seem to work very well when it's stuck in nozzles and threads)

heating (to 220C) is perfectly adequate to remove the nozzle and the brass tube without much force. use 2 M6 nuts tightened against each other if the nozzle is stubborn. you can then remove any left over from the nozzle by heating it, and wiping the pla from the threads with a q-tip (works inside the tube as well (when hot), just remove some of the cotton if it doesn't fit, and for obvious reasons, use paper sticks, not plastic). heat gun is great, a gas stove will do as well. to clean off the remains of PLA from the brass tube threads, use a M6 die thread cutter, it works wonders rejuvenating the threads.

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  

×

Important Information

Terms of Use Privacy Policy