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Made exactly to our specifications, these bits took over a year to develop and refine. The great advantage of high-speed steel (HSS) bits is that heat build-up will not soften them, as will happen with carbon steel. Bits larger than 1" in diameter have 1/2" hex shanks. Bits up to 1" in diameter are forstner pattern and have 3/8" round shanks.
The rim on the forstners is proud of the chippers by only 0.005" to 0.010", reducing rim heat. The saw tooth styles are true saw tooth bits, not forstner bits with rim notches. The teeth have a skewed shear-cut design to prevent fiber pull and to give clean holes.
Both styles have slightly sloped chipping bevels so that bits ride a shallow cone of wood to keep them boring straight. Center brads can then be shorter, increasing bit versatility in thin material. As a last touch, bits have been finished with extra-fine grinding wheels to reduce friction.
The set of 29 includes Forstner bits from 1/4" to 1" in 1/16" increments and saw tooth bits from 1 1/8" to 3" in 1/8" increments. Overall length is 3 1/2" for bits up to 1", 5" for bits from 1 1/16" to 2", and 6 1/2" for bits over 2".
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Set of 29 Imperial HSS Forstner & Saw Tooth Bits with Wooden Boxes
Made exactly to our specifications, these bits took over a year to develop and refine. The great advantage of high-speed steel (HSS) bits is that heat build-up will not soften them, as will happen with carbon steel. Bits larger than 1" in diameter have 1/2" hex shanks. Bits up to 1" in diameter are forstner pattern and have 3/8" round shanks.
The rim on the forstners is proud of the chippers by only 0.005" to 0.010", reducing rim heat. The saw tooth styles are true saw tooth bits, not forstner bits with rim notches. The teeth have a skewed shear-cut design to prevent fiber pull and to give clean holes.
Both styles have slightly sloped chipping bevels so that bits ride a shallow cone of wood to keep them boring straight. Center brads can then be shorter, increasing bit versatility in thin material. As a last touch, bits have been finished with extra-fine grinding wheels to reduce friction.
The set of 29 includes Forstner bits from 1/4" to 1" in 1/16" increments and saw tooth bits from 1 1/8" to 3" in 1/8" increments. Overall length is 3 1/2" for bits up to 1", 5" for bits from 1 1/16" to 2", and 6 1/2" for bits over 2".
