Rapidograph unstucking

[Asteris]

The pictures speak for themselves... While changing cratridges the way the manual says, the tip and feed got stuck. Too afraid to use brute force. Any help? 

[Black Spot]

A Rotring, I would try gently heating the outside of the body using a hair dryer on low and dont get to close. Dip it in warm water in the hope that the water lubricates the threads. 

If that does not work warm water mixed with a liquid dish soap poured into the open end let it sit for a few minuets. Then gently try turning and wiggling the feed.

Take you time.

 

Or you can put it in a vice heat it with a heat gun and crank on it with a pipe wrench and buy yourself a staedtler rapidograph, they are easer to care for and last forever. 

[Asteris]

Don't staedler radiographs have problems with line concistency?

[Black Spot]

I do not remember if that happed, But the Rotring should be fine. If I was there I would have it out in a few minutes.