I know that this has been mentioned before, but I figure this is worth rementioning. As most here know, I happen to be a clean freak. Clean and vintage are often contrasting terms.
I've tried just about everything now to clean keys, frames, covers, cords etc... Why people used to place stickers and use ink pens on their keyboards is beyond me?? I had mentioned at some point that aggressively cleaning the painted metal casing of my much loved AT-F boards is not a good idea. I've managed to remove paint into primer and down to metal. No biggee since my friendly neighborhood body shop will prime/paint the thing for me, but lesson learned.
I wish I had taken "before" pictures, but the seller of this board mentioned that the keys are a 9/10, but that the case is about a 6.5/10. I think that was conservative, but there were multiple scuff marks, ink stains, and other non descript black streaks that just wouldn't come off with the usual chemicals. Simple Greeen, Orange Solvent, 409, alcohol etc....
So enter this product:
Wet slightly, and scrub. That's it. Here is my AT-F after about 5 minutes of light clean up. I'd say this board is at least a 6.75/10 now LOL. Great stuff and stupid simple which is how I like it.
On to the pics:
Do NOT scrub that metal IBM plate. The letters will come off if you're not careful. I use a diaper wipe to lightly clean and that's it. So far that's been safe and it leaves a nice fresh scent.
Enjoy,
skc