When I had my last sailboat, I discovered a product called 5200. I forgot who makes it. It's a super-duper bonding agent for boats. If you use it to glue a piece of wood to a piece of fiberglass, you'd better be prepared to have them married for life. If you do manage to get them separated, both pieces will be unuseable, and you will have some wood on the fiberglass and some fiberglass on the wood. In fact, the only way to get them separated is to use a grinder to completely grind off the one of the two pieces you don't want to exist anymore.
Some 15 years later, I decided to replace the last sink I'll ever wind up replacing myself. I remembered this magical 5200 stuff. I thought that since it was good enough to use on boats, it was good enough for my new kitchen sink.
I used it to glue the sink to the countertop. :r
Five years later, I decided I didn't like the ceramic sink so much anymore. I called my handyman over to help me get the sink removed. At first he was like :s to the story of how fantastic 5200 was.
45 minutes into the job, we hadn't succeeded in cutting through any of the 5200. None. Not one centimeter. And this was the standard 22 X 33 sink cutout. We tried chisels, knives, razor blades, carpet knives, you name it. The only thing we managed to accomplish was to chip a little of the 5200 out of the area we used to seal the edge of the sink to the countertop.
So I just wound up replacing the faucet and the garbage disposal.
The only thing we didn't try was a Dremel tool with one of those little 1" round circular blades. The only reason I didn't try that was that I was pretty sure I would end up damaging the countertop to the point that it would be visible, even with the new sink.
I'm going to have to replace the countertop whenever I finally do have to replace that sink. :m
My handyman and I now refer to this 5200 product as "the stuff of which we do not speak".