Q: Why is the flute upcut instead of straight?
The double-flute upcut spiral design in this spiral router bit lifts waste up and out of the cut, which keeps the bit from plugging or overheating during plunge routing.
86J0101 - 1/8" x 3/8" x 1/4" HSS Onsrud Spiral Bit
Diameter:
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These router bits have several unique features.
The double-flute upcut spiral design ensures rapid, clean waste removal, particularly in plunge routing where the specially designed end mill lets you plunge without fear of plugging and heat generation.
They are excellent for grooving, slitting, blind routing and end milling.
The bits range in length from 2 5/8" to 3 1/2" according to size. High-speed steel, they are suitable for all woods, non-abrasive plastics, and aluminum. The 3/8" and 5/16" shank diameter sizes require separate bushing adapters (sold separately).
The 1/4" and 3/8” bits are suitable for use with our router letter template set.
Available individually or in sets.
Made in USA.
The double-flute upcut spiral design in this spiral router bit lifts waste up and out of the cut, which keeps the bit from plugging or overheating during plunge routing.
Not necessarily; the 5/16" and 3/8" shank sizes need separate bushing adapters, available separately, to fit a standard router collet, while the other sizes chuck in directly.
They're suitable for all wood species, non-abrasive plastics and aluminum, making them useful beyond typical wood-only router bits.
Each diameter is available individually, or you can buy a 3- or 5-bit set if you need several sizes for a project.
Yes, the 1/4" and 3/8" bits are sized to work with the routerr letter template set for signmaking and lettering work.
| Materials | High-speed steel |
| Dimensions | 1/8" dia., 3/8" cut length, 1/4" shank; 3/16" dia., 5/8" cut length, 1/4" shank; 1/4" dia., 1" cut length, 1/4" shank; 5/16" dia., 1" cut length, 5/16" shank; 3/8" dia., 1" cut length, 3/8" shank; 7/16" dia., 1 3/4" cut length, 1/2" shank; 1/2" dia., 1 1/2" cut length, 1/2" shank; 3/4" dia., 1 1/4" cut length, 1/2" shank |
| Compatibility | Accepts 1/4", 5/16", 3/8" or 1/2" router shank/collet sizes; 5/16" and 3/8" shanks require separate bushing adapters, sold separately; 1/4" and 3/8" bits fit the router letter template set |
| Includes | Router bit |
| Package Quantity | Pack of 3 or 5 |
| Country of Origin | USA |
| Warranty | Lee Valley Satisfaction Guarantee |
Options:
Diameter
Variations:
High-Speed Steel Onsrud Spiral Router Bits
These router bits have several unique features.
The double-flute upcut spiral design ensures rapid, clean waste removal, particularly in plunge routing where the specially designed end mill lets you plunge without fear of plugging and heat generation.
They are excellent for grooving, slitting, blind routing and end milling.
The bits range in length from 2 5/8" to 3 1/2" according to size. High-speed steel, they are suitable for all woods, non-abrasive plastics, and aluminum. The 3/8" and 5/16" shank diameter sizes require separate bushing adapters (sold separately).
The 1/4" and 3/8” bits are suitable for use with our router letter template set.
Available individually or in sets.
Made in USA.
Choose an option to view item availability.
Choose an option to view item availability.
Choose an option to view item availability.
Choose an option to view item availability.
