I don't think this was mentioned, but I believe (from what I read in Ames) they would remove the cover plates and panels before dunking; in addition to the rubber. Also, I think (if applicable) it would be a bad idea to get "glass" keys wet.

TyperwriterGuy wrote:

Oh, and how much should I be using? 
Also, I have read comet is safe unless I rub it on the paint because it will scratch??

I've never measured how much I use, I just add enough to the water to change its colour; you can always start off using less and see how effective it is and add more as needed.

The can I have states in big letters that its "scratch free." Regardless, I don't use it to clean painted parts (the main case components are always removed first, but sometimes there are smaller painted areas that aren't worth the trouble of removing that stay on the machine), I just use a number of special brushes that I bought to scrub the mechanical internals. Remember, this method is a general degrease and cleaning of a typewriter's mechanical parts, the rest of the machine I clean using other methods. I also avoid immersing the keys to be safe, and for obvious reasons never those with paper indexes. 

Hello Uwe,

I can not see the files/jpegs you posted to explain dunk cleaning. Seems like their link is broken.
Is there anyway you could post the instructions/jpegs again?

Thank you!