too much hassle
y bother with the entire keyb?
pop the keys, put in the knife basket, jobs a good un
just wipe the chasis down....
annother key cleaning trick i often use, is the good old vinegar and water (best with hot water) solution put into a jug, which i put all the keys in, and stir with a fork or whisk (hand not electric) for 5 mins, then give each key a wipe and reinstall
if stirring is too much hassle, use an empty pop bottle, put the lid on and shake about
find i can recondition a keyboard in about 30 mins like that, only use a dish washwasher when i have more than 5 keyboards to process
as for dome style membranes, i find that hooking the top edge then just pushing down the key till it clicks gets them back on fine, dont try to press them straight down like you would a sheet membrane
if any one has an easy way to reattach a space bar let me know.........