If you coat the granules in copper first, the fine layer of copper
will actually assist in hanging on to the curved surface.
Make a solution of pickle, and throw a piece of steel. Steel wool
works nicely. Arrange your little granules with the “glue”, I use
15 drops of distilled water, 3 drops of Hide Rabbit Glue and 2 drops
of Batterns Flux. The copper coating is called a eutectic bonding.
The copper coating is very important, or those little granules hop
off like frogs on a hot plate.
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