"Garland Gray II" wrote:
..
> 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 ?
NO.
> Or would I
> need to first wrap the pipe with sheet plastic or similar ?
Depends.
Easiest solution is to glass pvc tube and leave it in place.
It what I did to make a shaft tube.
Next approach was using an 8" PVC pipe for a mold to fabricate a bow
thruster tube..
First you slit the PVC pipe on one side using a table saw.
Then you plug the ends of the slit tube with wooden plugs.
Next, cover slit pipe completely with clear contact paper.
Sup****t tube on each end.
Next, using light weight glass, say 17 OZ, double bias, wrap tube in a
continuous wrap until yo get req'd layers.
When cured, cut off plugs and break PVC pipe in pieces to remove.
Doubtful you can do this on a small pipe such as 2-1/2".
If you must remove PVC tube, the cover it with contact paper and wrap
2-3 layers of glass.
When cured, slit both glass and PVC tube with a saw, the spring
lamination open to remove PVC tube.
Repair cut in glass, then use a mold to finish layup.
I've done all of them.
Have fun.
Lew
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