Mwtca giveaway
This page shows the give away from the
Midwest Tool Collector's Association
national meet. My post to the oldtools list can be found
here.
Left to right 6" rule, iron casting, mahogany pattern, Rob Kempenski's
chisel plane body, chisel plane lever cap on chisel plane blade.
Other copies of Rob's chisel plane can be found on the net:
Brian Buckner's
Scott Post's page no longer works.
side view
Pattern board containing seven copies of the pattern. The foundry
has some sort of automatic molding machine sized for this board.
Opposite side of the pattern board.
600 of these doorstops were cast as the give away for the fall
national mwtca tool meet. The letters are inset to facilate the
conversion from doorstop to chisel plane. This added an extra
step to the pattern process. A plaster mold of the mahogany
pattern was made. Reverse pattern letters were placed in the
mold and a plastic resin poured in. This became one of the
seven patterns shown on the board. Before it was added to the
board a rubber mold of it was made and six more plastic copies
made. The foundry wanted a dozen copies but I ran out of
resin after seven.
Above are the reverse pattern letters (also known as
core letters). Also shown
is a US quarter for scale (about 1" in diameter) and
to prove that the image isn't reversed.
Above is the rubber mold that was used to make the patterns that are
mounted to the pattern board.
There is talk of making suitably sided lever caps for a
future meet's give away! I'll probably have some cast even
if something else is selected as the give away.
Here's a side by side comparison of the casting with a
rubber hardward store door stop.
Top view
Side view showing just how close the angles are.
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