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Core Mould, 4-cavity adj. wt.
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Quantity in Basket:
None
Catalog No.: CM-4a
Price: $299.00
Shipping Weight: 5.00 pounds
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CM-4a core moulds turn scrap lead into proper diameter
cores. You can mix alloys (within the pressure limits of
your dies) and use scrap lead by melting and pouring. A
ladle and open top pot is generally prefered over a
bottom-pour pot, although the bottom-pour pot can be
mounted solidly on risers to allow the mould to pass
under it for filling.
The 4-cavity mould makes for cores with each cast. Pour,
move the sprue cutter to cut the connected sprue, lift
the bar at the bottom of the mould to raise the cores
out of the cylinders, and brush them off into a box. Then
close the top, put the sprue back into the pot, and pour
again.
Since the mould mounts to your bench, only one hand is
needed to operate the mould, and no handle is required.
Heat-resistant gloves are necessary (as well as face
protection, as always, when handling molten lead). For use
only in well ventilated spaces, away from the possibility
of water being introduced into the pot (such as rain,
water used to cool any tools, etc.) which can cause a
steam "explosion", driving molten lead out of
the pot.
We recommend lead wire for safety and speed, but offer
the CM-4a to use allow the use of scrap lead or mixed
alloys of your own choosing. Alloys with high tin content
should be avoided. The tin/lead alloys tend to solder to
the steel mould cores and pistons. Antimony/lead alloys
are preferred. Only clean lead
should be used. Road dust and grit can scratch the ID of
the moulds and cause stuck pistons.
The mould is adjustable for core weight. A rest plate supports
the pistons, and is in turn supported by two adjustable nuts
on threaded rods. The position of the nuts will determine
the length of cores, which determines their weight with a
given lead density.
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