Sac question

[Haynie]

Probably a dumb question here but something I have been wondering about. how does the sac connect to the feed?

 

[ashaw]

It fits similar to a cartridge but you glue it in with sac cement (shellac). You can remove it by applying a little heat to it (hair dryer).

 

[Haynie]

Thanks. Having never handled a fountain pen with a sac I kept seeing pictures on here and tried to wrap my head around how they stayed on.

Doesn't shellac dry out and become brittle?

 

[ashaw]

It's sac cement ( contains some shellac so that it can be removed). I over a time it does become brittle but the sac will wear out before that.

ALan