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Foredom Model 30 Depth Gauge for cut-off discs use
Another treasure found at a local surplus store (Industrial Liquidators in Hawthorne, CA), I came back to the shop at BGW Systems, Inc with a Forerdom Model MMG Bench-Model high speed hand grinder system. Bought both a Model 30 hand piece, which has a Jacob's #0 Chuck, and a smaller #28 handpiece (which used collets like used in Dremel's), I was a happy camper. When an order of PCB's arrived where the vendor messed up on cutting the depth of the PCB, I wandered into the machine shop and, armed with a 1-1/8" Forstner Bit, I drilled a thru hole in a small block of maple, then added a couple holes where I threaded in a pair of #10-32 bushings, and cut to size some fish paper and rolled it up, I had a crude but well-adustable depth gauge to set the cut of the carborundum cut-off discs. Then, is was a matter of slicing off the excess PCB material, and finishing the edge with my carbide mill files.
This simple depth gauge has seen a lot of use over the years. I've never had the funds nor the space for a proper milling machine, but have worked around the absence of it as needed.
Another treasure found at a local surplus store (Industrial Liquidators in Hawthorne, CA), I came back to the shop at BGW Systems, Inc with a Forerdom Model MMG Bench-Model high speed hand grinder system. Bought both a Model 30 hand piece, which has a Jacob's #0 Chuck, and a smaller #28 handpiece (which used collets like used in Dremel's), I was a happy camper. When an order of PCB's arrived where the vendor messed up on cutting the depth of the PCB, I wandered into the machine shop and, armed with a 1-1/8" Forstner Bit, I drilled a thru hole in a small block of maple, then added a couple holes where I threaded in a pair of #10-32 bushings, and cut to size some fish paper and rolled it up, I had a crude but well-adustable depth gauge to set the cut of the carborundum cut-off discs. Then, is was a matter of slicing off the excess PCB material, and finishing the edge with my carbide mill files.
This simple depth gauge has seen a lot of use over the years. I've never had the funds nor the space for a proper milling machine, but have worked around the absence of it as needed.
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