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Woodworking blog entries tagged with 'foundry pattern'

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Wood pattern for casting iron flowers #4: What remains, is what you want.

03-26-2017 06:52 PM by Patternguy | 0 comments »

Corny title…but it pretty much sums it up. The wood pieces in the previous posts are what’s known as “plugs”. The red plug represents what the inside of the flower casting will look like. The mahogany plug represents the outside of the flower. 1. Two pieces of plywood are drilled and pinned together. Center-lines are transferred from one to the other. 2. The mahogany plug is mounted on one piece of plywood using the center-lines to locate it. 3. A wood fram...

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Wood pattern for casting iron flowers #1: There is an inside, and an outside, to everything.

03-19-2017 03:23 AM by Patternguy | 0 comments »

Master patterns and production tooling belonged to whoever paid the invoice. On the other hand, whatever was used to build the pattern, things like jigs, fixtures, molds, negatives, or plugs, was recycled in the shop, or was dis-guarded. Stuff like that usually got thrown into the scrap barrel. The objects that are the focus of this story escaped that fate and ended up on a shelf in my garage. I think they have a story worth telling. Patterns often required unique shapes that had to be...

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