Quote:
Originally Posted by OnePutt
Thank you GolfSavage for your reply. I also heard of a tour guy having a problem installing a shaft in an iron one time. He epoxied it twice, and each time it came loose. Turns out the Pro that owned the club had sprayed WD 40 inside the shaft for some reason, and the WD 40 was the cause of the epoxy not sticking to the shaft. He cleaned out the shaft and the problem was gone. I can only assume the pro was worried about rust for some reason.
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WD40 is a poor moisture repellant. Surface moisture can actually become trapped between the film of WD40 and the metal. I've seen many firearms and fishing reels rusted after the owner thought they were protecting them with WD40. It also can make small screws and fittings loosen, which of course then causes the item to fail at the worst times!
Also, WD40's penetrating/dissolving qualities can cause problems with lots of adhesives.
For moisture repelling, a high-quality silicone lubricant is recommended. It will adhere to the metal, forcing the moisture to the surface and away from the metal. Of course, make sure you ddon't get any silicone on a surface you are trying to glue or epoxy something to (like a head or a grip).