Here's a question from the September/October 1999 issue of RodMaker magazine:
"I am having fits trying to make the ferrule reinforcement wrap on my
two-piece rod. Not only is it hard to do, but I am not sure how much
tension and how long the wrap should be. I would appreciate any help
you could give me on this" Jim, Miami, FL
"The wrap tension on a ferrule reinforcement wrap should be a fair
bit more snug than on a guide wrap. The idea here is to provide a bit
of hoop strength for the ferrule, and to prevent a split out from
occuring at the edge of the ferrule. Although most manufacturers
include some sort of reinforcement wrap on this critical juncture, most
also continue to recommend that a thread reinforcement wrap be made
as well, regardless of the type ferrule use. On tip-over-butt ferrules
or butt-into-tip types, the female ferrule requires a wrap. On
spigot (plug) ferrules, both the male and female ferrules should be
wrapped.
To make things a bit easier for you, I would suggest starting your
wrap away from the ferrule edge and wrapping towards that edge. You may
need to insert the but/tip section into the ferrule opening in order
to support the open end of the ferrule. Make the insertion depth
before wrapping and take care that your wrapping tension is not
so tight as to constrict the female ferrule opening to the point
where you cannot fully seat the ferrule.
Make sure to wrap almost to the very edge of the ferrule, at
least within 1mm to 2mm, since split-outs start at the very
edge. Many builders debate how long the wraps should be, and in
my opinion, most make the reinforcement wraps much too long. For
years I settled on a formula having the length being twice the
outside diameter at the ferrule opening and have an absolutely
zero failure rate at the ferrule. If you do not feel comfortable
with this, I suggest calling the manufacturer of your particular blank
and asking for their recommendation as to the ferrule reinforcement
wrap length which should be used.
I would also like to make a suggestion to any of the blank manufacturers
who do not indicated such in or on their blank packaging, to kindly
instruct the builder as to whether or not such a reinforcement wrap
is necessary, and how long it should be. Doing so might help
prevent many failed blanks from being returned for replacement.
~ Tom Kirkman
Publishers note:
If you have any tips or techniques, send them along! Help out your
fellow rodmakers!
~ Publisher, FAOL
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