corbin et-1-h User Guide

ET-1-H Jacket Trim Die

The Corbin ET-1-H Expand/Trim die fits the Corbin MegaMite, Hy­dro Junior, or Hydro Press. It trims jackets of a given caliber to precise,
shorter lengths with a clean, even beveled mouth in one stroke.

The ET-1-H is best used with the optional Corbin SK-1-H Stripper Kit,
which automatically strips the trimmed portion of the jacket from the
punch, and ejects the jacket, on the down stroke of the press. The Stripper
Kit is universal for all ET-1-H trimmer dies, with the exception of the
stripper plate, which is different for each caliber. One stripper plate comes
with the kit; others may be ordered for additional calibers of jacket trim
dies.

1) Screw the punch into the press ram, and screw the die into the press

head as shown.

2) Raise the ram of the press until it reaches the maximum upward travel.

On Corbin hydraulic presses, raise the top sensor so that the ram is
stopped by the drive cylinder limit, then lower the sensor so its LED
just comes on at this position. Put the punch and the die into the press.
It is very important not to force the punch into the die face; it must be
pushed only so far as to pinch
off the jacket. With the ram
in the upmost position, adjust
the die downward so the
punch and the die just touch.
Move the ram down for the
next step.

3) Install the stripper kit, which

has its own instruction sheet.
The kit includes a heavy ejec­tion bar and a thin stripper
plate. The stripper plate goes
over the punch. The ejection
bar is locked in place by four
spring pins, two per side, into
the long rods of the stripper
kit.

4) Get a small

amount of
Corbin Swage
Lube on your finger­tip and wipe the punch
with it. Then put a jacket
over the end of the punch,
and raise the ram. The
jacket should enter the die
mouth. The portion of the
jacket projecting from the
die should be crushed and then
gently nipped off by the pressure
of the punch against the die face.

It is very important that the clear­ance be set properly; do not adjust the
die any further down toward the ram than is
necessary to just clip off the surplus jacket mate­rial. Otherwise you may destroy the punch or the

die.

5) Lower the ram and the jacket will be ejected while the surplus material

is pushed off the punch. You can catch the jacket in one hand, and then
after the press stops moving, pick up the surplus trim and discard it.
Repeat steps four and five until all the jackets are trimmed to the de­sired length.

Warning: The cut jacket edges are sharp. Be careful handling them. If the

trimmed jacket material is too sharp to handle safely by hand, use a
pair of needle nose pliers or tweezers to pull the remains off the punch.

Caution: Do not use the wrong punch with a given caliber of die. Each

die and punch set is made for proper trimming of a certain caliber of
jacket and may be damaged if used incorrectly.

Note: Do not attempt to trim jackets that are significantly thicker than

the samples for which the set was built. If there is any doubt, send
sample jackets to Corbin, along with your die and punch, so we can
test them at our risk rather than yours. Do not grind, turn, polish, or
attempt to modify the die or punch: if you feel there is a problem, call
for an RMA number and return it with a clear explanation of the prob­lem and samples of the jackets. Copper tubing, steel, brass, or jackets
other than those for which the set was designed and tested should not
be used with this tool. Doing so may destroy it and the warranty.