Auger Bit for Hardwood
Serpentine drill with lower blade
Serpent drills with lower blades are used especially for deep hole drilling in hardwoods and exotic woods, such as Bongossi. The lower knives ensure less heat development and thus lead to a considerably longer service life compared to the normal "Lewis" form. For softwoods it is better to use the normal version with pre-cutters.
Can be used in hand drills and joinery machines.
AØ: Outside diameter
SØ: Shaft diameter
SpL: Spiral length
GL: Total length
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