... Work with CA on a marble table.
Because you cannot scratch it off afterwards. It literally eats its way down, leaving significant pits behind.

I coated the insides of some scales with CA to seal them for moisture.
But some of it ran through the pin holes, gluing the scales to the table.

I could remove them easy enough because it didn't really stick to the table, but the surface was busted.

So the table top was not mint anymore, and it will experience a lot of other acidents after this one, but it still sucks because I like the table. It measures 2 by 5 feet, and is about knee high. It is in our living room between the sofa and the TV, which is where I do most of my restor work.