Glossary
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E
Expansion slot - slots on a saw blade designed to prevent distortion of the rim of larger diameter blades. Provides relief areas for expansion of materials from heat and prevents blade distortion.
See:
Circular Saw Blades
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Expansive bit - taking the place of many larger bits, expansive bits are adjusted by moving the cutting blade in or out by a geared dial or by a lockscrew to vary the size of the hole.
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Extension - an attachment to a drill that extends the overall length of the bit to facilitate long reaches.
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