[R-390] Filter caps

[Patrick]

Have rebuilt plenty of them, the way I do it is first build a jig of wood
with a hole of the outside diameter of the cap, cut it in half  and clamp
the capacitor in it after having cut oll pins and the center guide. Then on
your drill press, carefully centered and with a wood bit a little smaller
than the inside diameter and with the stop a little higher than the bottom
of the cap, slowly drill (moderate speed) enough of the capacitor innards
will came out to insert new smaller cap or caps as needed. You may need to
extend with new color coded the cap wires for ease of later connecting them
to the pins. Then I fill the cap with wax to add weight to about 3/4 full,
when solidified y get a new  or good used octal base that may have to be
grinded to the proper diameter, solder the conections to it as short as
posible to use a glue gun to fill the rest of the can to the top. With the
glue still hot inset the new base, the extra length of wires will fold in
the hot glue and some glue should come out in the perimeter, do not worry,
it can be removed easily with a knife after. Now you have a replacement that
looks the same as the old one and weighs about the same. Do not forget to
label the cap. Hope that this makes sense. It does not take a long time. (
The drill press does make a little mess, but it does not smell and can be
swept easily)    Hope this helps.......  Pat
----- Original Message ----- 
From: "Tom Frobase" <tfrobase at gmail.com>
To: "Larry Snyder" <larrys at teamlarry.com>
Cc: <r-390 at mailman.qth.net>
Sent: Thursday, May 21, 2009 9:04 PM
Subject: Re: [R-390] Filter caps


> Put the top of the can in a vise or better yet a pipe vice.  Hold it
> lightly taking care not to smash the can.  Take a propane touch and
> slowly heat the can.  Hold the base with a pair of channel locks it will
> slip right out ... tom, N3LLL
>
> Larry Snyder wrote:
>> Hi all --
>> I'm going through Walter's rebuild procedure for my 1956 filter caps.
>> I have a nice cut just above the crimp ring, but they don't want to
>> come out of the cans.  Would a hot water bath on the stove be a
>> viable assist?
>> thanx!
>> -ls-
>> WA8RRK
>>
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