Painting Sash Windows

[keenbutconfused]

I am about to paint my sash windows. Do I need to take them out of their frame to do this. I am looking at where the sash bit touches the frame and wondering how I can get a neat edge and not paint the windows shut.

Any tips?

 

[Zampa]

From the inside or out?

 

[Calathea]

Couple of matchsticks between the window and the frame should keep it apart enough so that they wouldn't paint shut. OR remove the beading, put a nail in the sash cord so it cannot go past the pully and remove the window from the frame if you want to do it properly. I'm only a DIYer but i've restored a victorian sash meself and it wasnt too tricky.