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Hints for Huge Holes

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Comparing the Cutters

Comparing the Cutters

Forstner and multispur bits are available in diameters up to 4" from several suppliers, including Woodcraft (800/225-1153) or Woodworker's Supply (800/645-9292). Sizes generally increase in 1/8" increments beyond 2". Bits imported from the Far East cost $20-40 each; European- or American-made ones can cost more.


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An adjustable circle cutter like the one shown at left, will produce holes up to 8" in diameter. The quality of the cut usually won't equal that of the Forstner and multispur bits, but will be better than a holesaw. The capability of boring odd-size holes is a plus for this tool, widely available from hardware stores, home centers, and tool dealers.


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Holesaws, like the one shown in the photo left, come in diameters up to 6". Often used by contractors, big holesaws are available at hardware stores, lumberyards, and large home centers. Interchangeable blades -- usually sized in 1/8" steps -- attach to a separate arbor. Holesaw prices are similar to those of the Far East Forstner and multispur bits.


Continued on page 3:  Big-Cutter Cautions

 

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