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 Technique
courtesy of Susan Kingsley, Lee Marshall
Forming a part using a matrix die requires a piece
of metal large enough to provide a flange all around
the form. If the finished part does not incorporate
the flange as part of the design, it must be removed.
If only a few pieces are to be made, the most efficient
method to remove the flange is to saw it away. However,
if a large quantity of parts are required, a more practical
method is to make a combination matrix/blanking die.
The matrix/blanking die method allows the form to be
made and the flange to be trimmed away in a simple two
step process.
If you haven't made a blanking die before, don't
start this project. The following information presumes
prior knowledge! Go to page 53 of Susan Kingsley's book
"Hydraulic
Die Forming for Jewelers and Metalsmiths" for
this.
The making of the matrix/blanking die set is done
in a very structured manner and may place feelings of
constraint on metalsmiths unused to rules of order.
This is not an area where you can "wing it".
I will attempt to ease your sense of panic and make
it a fun project.
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