"Kevin" wrote in message
...
On Jun 7, 9:13 pm, "CW" wrote:
"HeyBub" wrote in message

m... GouldsofDerbyshire
wrote:
Haven't kept up with the thread. Was using loctite mentioned?

Not mentioned, but wouldn't Locktite interfere with changing blades?

Loctite generally causes more problems than it solves. The need is for
getting the fastener tight, not gluing it in a loose position (such as
with
loctite).
To get tight and remain that way, the screw is run in until the head
contacts the part to be held and is then turned somewhat further, putting
the screw in tension. Due to the large surface area of the thread
engagement and the 60 degree angle of the threads, they will gal and seize
well before the body of the screw comes under tension. Buy using a high
pressure lubricant on the threads,the screw can be turned enough to put it
under proper tension and it will hold much tighter than it would dry. The
lubricant used must be a high pressure type (Lubriplate, Antisieze, etc.).
Something like 3 in 1 oil will not do it. Putting the body of the screw
under tension is the same way a lock washer works. Though the screw may
not
be really tight(due to the galling), the spring pressure of the washer
holds
the screw under tension preventing it from loosening. In addition, anyone
that has worked with black pipe will tell you, the pipe will not seal
without the application of Teflon tape or pipe dope before assembly. Pipe
dope and Teflon tape is NOT a sealer. It is a lubricant which enables you
to
tighten the threads enough for the threads to make a seal.
The point? Use some anti seize on the screw.

So could you just use teflon tape?

Yes.