You've had many good suggestions for dealing with the shrinkage of the
glass-epoxy laminate. Here's one more.

With a tablesaw, cut one lengthwise slit in the pipe and cover the slit with
packing tape.
Wax the pipe thoroughly and do your layup. Bond a couple of blocks or other
attachment points to one end the part.
Twisting the pipe vs. the part should break the bond between the pipe and
the part.
Drill the other end of the pipe for some attachment and pull the part from
the pipe with a come-along.

"Garland Gray II" wrote in message
...
If I were to wax the outside of a piece of 2 1/2 inch pvc pipe about 6
feet long, and then lay up several layers of fiberglass and epoxy, would
the resulting tube slide off the pvc easily enough after curing ? Or would
I need to first wrap the pipe with sheet plastic or similar ?
Thanks !