HP-67 - need help to remove cleaning residue

[EdinLA44]

Hi folks,

Thanks for the suggestions, especially Geoff. Your cleaning process works wonders. Those calcs look great.

quantalume,

I'm in California. I'll pick up some Scott's liquid gold next time I'm at the store

Geoff,

I'm not confident that I'd be able to take one of these calcs apart completely without risk of breakage.

Ed