[BC] recommended fluxes for silver soldering ground system/radials?

[Mike McCarthy]

Why go the Dremmal route when any drill will do with a good coarse grit
stainless wire wheel.  Reverse the wheel's direction after a while and it
digs in real deep. If you are in doubt abut any debris, some 99% alcohol
will clean things up nicely after the wheel.

I really don't want a polished surface for soldering.  I want something
which has some grit for adheson.

MM

> At 08:07 PM 4/21/2010, Cowboy wrote:
>
>>If the copper is CLEAN
>
> In recent years I have used Dremel abrasive buffs to clean strap
> before brazing with 15% Silv-Alloy. The buffs come in three grits -
> 180, 280 and 320. I sometimes have to start with the coarsest if
> bonding to an old strap, especially one that has been outdoors. I
> always end with the 320, even on new strap. Clean surfaces are a
> must. On thin, relatively narrow straps MAPP gas will work, but on
> anything with more mass I use oxy-propane (a trick learned from an
> auto mechanic decades ago - cheaper than oxy-acetylene and sufficient
> for anything short of heavy cutting).
>
> Dale H. Cook, Contract Engineer, Roanoke/Lynchburg, VA