On 27/03/2021 19:04, Tim+ wrote:
As part of my insane quest to overcomplicate my CH system I need to remove
a 22mm right angled soldered fitting to fit a compression one instead.

To complicate matters theres another soldered fitting just over an inch
away that I really dont want to disturb (so may end up packing it in ice).

Any tips on how to cleanly remove solder to eliminate the risk of my olive
not seating/sealing properly?

Just wipe the hot pipe with a dry cloth or failing that a paper kitchen
towel.

If the olive goes on, I'm sure it will cut through any film of solder.