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.
Update 2011
A doorstop has been converted to a chisel plane! Details at the bottom of the page

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 hardware store doorstop.

Top view

Side view showing just how close the angles are.

Update 2011
Keith Rucker of Tifton, GA completed the transition from doorstop to chisel plane! I believe he's the only one to complete the transformation. He even cast a lever cap for it using a #62's lever cap as a pattern. Way to go Keith!