Why lathe-bored moulds?
boring a mould no cherries are required. The same tools used
to make a 30 caliber mould can also be used for any mould up to 50
caliber. Blocks are clamped together to machine them.
Doing it this way, the blocks are held rigid and are perfectly
round inside. Hoch lathe-bored moulds are made on a Hardinge
second operation lathe specially tooled for making moulds.
Making moulds by lathe boring can produce
several moulds of one design, but all having different diameters.
If moulds of the same design are ordered at one time, then all can
have the same diameter or different as one desires. This is
a time consuming process, and moulds are made only on a custom
basis. None are stocked.
Machining tolerances: 0 to + .001.
All moulds are tested before leaving the
shop by casting several bullets using the alloy specified by
customer and measured with a Mitutoyo electronic micrometer.