Foos Nano Up Cut Spiral Router Bits - Solid Carbide - 1/4" Shank
Foos Nano Up Cut Spiral Router Bits - Solid Carbide - 1/4" Shank
Part #: FB-3788
- FAST CHIP CLEARING: The up cut spiral pulls chips up and out of the cut, so slots and pockets stay clear and the bit runs cooler. Plunges cleanly and leaves a clean bottom edge.
- MANY MATERIALS: Sharp solid carbide cuts cleanly in hardwood, softwood, MDF, plywood, acrylic, PVC, ABS, two-color engraving laminates and other plastics, plus aluminum, brass and carbon fiber.
- THREE SIZES IN ONE SET: 1/8", 3/16" and 1/4" cutting diameters go from fine detail to fast material removal. 1/4 inch shanks fit most CNC and trim routers.
- FOOS NANO COATED: The coating cuts friction, so the bit runs cooler, resists pitch and resin buildup, and holds a sharp edge longer than an uncoated bit. Less cleanup between jobs.
- USA VETERAN-OWNED SUPPORT: US veteran-owned FOOS has sold router bits on Amazon for 10 years. Message us and a real person answers. Every bit is laser-engraved with FOOS and its part number.
FOOS Nano Coated Up Cut Spiral Router Bits, 1/4" shank, solid carbide.
What it is for: plunge cuts, slotting, pocketing and profiling, with the spiral pulling chips up and out of the cut.
Materials: hardwood, softwood, plywood, MDF, acrylic, PVC, ABS, laminates and other plastics, plus aluminum, brass and carbon fiber. Use lighter passes and suitable speeds in metals.
Fit: 1/4" shanks for 1/4" collets on CNC routers, desktop CNCs and trim routers.
FOOS Nano coating: the coating reduces friction at the cutting edge, so the bit runs cooler, resists pitch and resin buildup, and holds a sharp edge longer.
Every FOOS bit is laser-engraved with the FOOS brand and its part number, so reordering the right size is easy. FOOS is a US veteran-owned shop. Speeds and feeds depend on your machine, material and depth of cut. Message us and we will help you dial them in.
FOOS Part #s by size: 1/8" FB-3788, 3/16" FB-4589, 1/4" FB-9675.
Speeds & Feeds
Starting values for 2-flute FOOS Nano Up Cut bits at 18,000 RPM. Feed = RPM × 2 flutes × chip load. Plunge at about 1/3 of feed.
| Material | RPM | 1/8" (FB-3788) | 3/16" (FB-4589) | 1/4" (FB-9675) | Stepover |
|---|---|---|---|---|---|
| Softwood | 18,000 | 55 IPM .0015 chip .0625" depth |
70 IPM .002 chip .09" depth |
90 IPM .0025 chip .125" depth |
40% |
| Hardwood | 18,000 | 45 IPM .0012 chip .04" depth |
60 IPM .0016 chip .06" depth |
70 IPM .002 chip .08" depth |
40% |
| Plywood / MDF | 18,000 | 55 IPM .0015 chip .0625" depth |
70 IPM .002 chip .09" depth |
90 IPM .0025 chip .125" depth |
40% |
| Acrylic | 18,000 | 55 IPM .0015 chip .04" depth |
70 IPM .002 chip .06" depth |
90 IPM .0025 chip .08" depth |
35% |
| Aluminum | 18,000 | 20 IPM .0005 chip .01" depth |
25 IPM .0007 chip .015" depth |
30 IPM .0009 chip .02" depth |
25% |
These are starting points. Adjust for your machine's rigidity and material, and listen to the cut. Feed in inches per minute (IPM). Depth is per pass. Stepover as % of bit diameter. Aluminum: light passes, air blast or mist, and clear chips so they are not re-cut.