Check out Lee Valley Tools. I know they still sell PEG - it is used as a
stabilizer strengthener for some wood projects. The used to sell a 2
part product - I think a thin epoxy - that was specifically designed for
stabilizing rotting wood - window frames, etc. Their customer service
people are generally very helpful, both by phone & by email.
Bruce

"Jim Wild" wrote in message
...
Great question huh? In fact, I need to preserve this half way rotten
stump for a possible piece of art to be mounted on top of it. (On a
golf course) It is 3' in diameter at the base, 4' tall, but has a rotted
center that you could fit a bowling ball into. We are planning a very
large and expensive wood carving to be mounted on top of this stump.
Will filling the rotten middle with cement stop the rotting process for
at least a few years? If you can answer that one, your good.

Thanks, Jim