New P53 Trombone Slide Bow
Dent Ball Driver-Retriever
"Next step with
THE technology"
This tool is GREAT for doing mild dent work in the
bottom bow of most any size trombone for playing condition jobs and is
especially handy for RENTAL and
Rental Returned instruments to keep costs down these days.
Now everyone knows
that the trombone slide has at least two bottlenecks on its way down to the bow,
and another one or two there. These bottlenecks are caused by the nature
of soldering. When two well fitted parts are soldered together you are
basically injecting solder BETWEEN them. When the joint cools; the joint
swedges IN, shrinking the inside piece down.
In the late 50's when Cliff was looking for a better way to fix
trombone slides, this was a
big problem. Because, when you were trying to take a dent out of a slide, the
mandrel or slug would always be too loose in the slide because it was TIGHT going thru the
soldered area at the top of the slide from both the soldered on stocking or sleeve and the
brace flange areas. That is how and why the N11 Expandable Trombone Tool was born; so you
could go down into the slide and expand to the actual size of the tube.
Since the stockings were soldered both at the top and at the bottom and the
brace was soldered in the middle, there were 3 places where it was actually smaller than
the slide tube itself.
The SAME PROBLEM exists when
trying to go down into the bow. Most slides either have an opened swedged
connection
into which the bow is then soldered making it smaller there, or they have a soldered connection
using a connecting ring or ferrule. When soldered, the connection rings SHRINK the end of the
slide AND the entry into the slide bow tube is reduced.
To solve this problem just put the N11 in your vice as
usual and put the slide on it so that the expander is under the soldered joint.
Expand the N11 snugly at first (and more tightly later as you may need) while
TURNING the slide gently, using the bow as a lever, not the hand slide brace at
the other end; all the while keeping the expander under the connection ring.
(You may have to do both the slide tube side and the bow tube
side under the connection ring with
this process.) Using GREAT CARE now carefully BURNISH out the inside soldered area, kind of like reverse swedging. It won't take
much. So, BE CAREFUL!
If there is a little solder globed in there, the N11 may cut it out
when mis-using it in this fashion. (This may reduce the resistance in the
horn and make it actually play better, HA HA.) You may not have to do this
on all horns as some may have had it already done. Also, being within
.005" or.010" of the right sized ball may be good enough for the job you have at
hand. If the guard is smashed in you may want to take it off anyway,
especially if its one of those with the big knob sticking
out.
Think Common Sense.
FAST, Efficient and
Profitable. Three Things we all look for.
For use by hand, shown is adj. safety stop. Here shown with V-Block as in vice.
The cost of this time saver is just $82.50+s/h
Ferree's Tools-"the most copied tools in the world"
|
