Freud - 04-096 Double Flute Straight Router Bit 1/4" SH 1/16"D 1/4"CL
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Achieve general stock removal with a smooth finish with the Freud Double Fluted Straight Bit.Features: • Freud straight bits cut smoother than other bits because of the precise shear and hook...
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• Freud straight bits cut smoother than other bits because of the precise shear and hook angles.
• End of bit relief allows for fast plunging.
• Cuts all composite materials, plywoods, hardwoods, and softwoods.
• Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers.
Excelent bit, but be gentle.
This bit does exactly what it is intended to do, to carve a 1/16" straight sided groove. But do not push it beyond its capability. 1/16" deep passes are the max recommended for this. Also if you are using it in a CNC make sure it is spun up before it touches the material you are cutting. To my dismay the small diameter of the cutting flutes snap if you pause your job with the bit in the material and then unpause where the gantry moves as soon as the pause is over and the bit is not spun up yet. Carbide is extremely sharp and the sharp edge lasts seemingly forever. But it is brittle. Somebody mentioned the transition from the full 1/4" to the 1/16" Notice there are flutes on the thicker portion. This means if you are cnc controlling it, you can sink the bit to exactly at the surface and polish away any fuzzies at surface of the material. IF you are looking for a gradual transition then the bit you want is a tapered flat bottom or tapered ball nose bit. (they are much stronger but do not produce a straight sided groove).
Worked for me
I used this super small bit to "route" a 7/64 x 4" groove in UHMW with multiple passes to achieve the desired dimension. I first did the same with multiple (soft)wood blanks to insure my set up was correct. I did all of this slowly. There was no obvious departure from the stated cut of (1/16), but I have neither the equipment, inclication or need to verify. It would seem a gradual radius to the cutting diameter would be a better design, but perhaps at this size it is not practical - the Whiteside bit looks the same.
I would not buy this product again
The design of having such a strong transition in diameter is, in my opinion, very poor. I tried to use this bit in an edge trimmer to create a groove along the edge of a curved piece and it broke, immediately.