gerald_d
01-19-2005, 02:27 AM
Here is a concept for an edge-finder probe that can be used to run around the edge of a 2D template. The template can be non-conductive and does not have to be lined with foil tape.
5381
A short section of pipe to fit into the router collet, or clamped to the y-car. Red is electrically connected to the SB ground (earth).
A rod stuck concentrically into the pipe with silicon rubber. An 0-ring can be used under the silicon while it sets. (the cone bush also pushed in while the silicon sets).
Then a conductive conical bush, adjustable for height, grub-screwed to the rod, connected to the lead of the z-zero plate.
When the tip of the rod touches the template, it will flex inside the silicon and there will be electrical contact between bush and pipe.
Too cheap and simple?
5381
A short section of pipe to fit into the router collet, or clamped to the y-car. Red is electrically connected to the SB ground (earth).
A rod stuck concentrically into the pipe with silicon rubber. An 0-ring can be used under the silicon while it sets. (the cone bush also pushed in while the silicon sets).
Then a conductive conical bush, adjustable for height, grub-screwed to the rod, connected to the lead of the z-zero plate.
When the tip of the rod touches the template, it will flex inside the silicon and there will be electrical contact between bush and pipe.
Too cheap and simple?