RouterBitMall

Down Cut CNC Router Bit 3 Flute 3/8" Dia. X 1 1/4"

$39.00 AUD

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Available in yellow and red. Colors will be shipped randomly based on stock availability.

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Best used for: Laminate or veneer-finish plunging and dadoing.

Cutting Diameter: 3/8""
Cutting Height: 1-1/4"
Shank Diameter: 3/8"
Overall Length: 2-1/2"
Flutes: 3

Down cut endmills shear in a downward direction causing the uppermost layer of the material to be pressed down against the material just below it. This motion leaves a perfectly clean top surface edge. A concentration of wood chips in the work path will occur. Hose away excess wood chips to prevent bit breakage.

Pros: Prevents top surface edge chipping and tear-away.
Cons: Less than optimal chip removal when dadoing or plunging.
(Choose an up cut spiral bit for standard more efficient milling.)

For use in CNC milling and carving machines.

Bit Specs
Material:Solid Carbide
Number of Bits:1
End Mill Type:Downcut
Shank Size:3/8"
Cut Direction:Downcut
Cutting Diameter:3/8"
Cutting Length:1-1/8"
Overall Length:2-1/2"
Number of Flutes:3
Flute Angle:3°

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I don’t have a CNC mill, but this bit fit my router and I wanted to clean up some badly weathered ½ inch OSB to reuse for building a shed and I thought it would be a good test and hopefully a nice smooth finish. In fact it did work, but the weathered OSB swelled beyond its ½ inch thickness, so didn’t quite cut all the way through and the router platform slipped under the straightedge. Needing to move my straight edge, I left the router/cutter in the kerf as I moved the straightedge and the bit broke as easily as if were a toothpick, at least that’s how it seemed to me.

I’m sure it was my fault the bit broke- not a typical use, not careful enough, and no prior experience with such a fine (1/16 inch) cutter. I believe the machining was of high quality and it was well packaged, but I’m not comfortable giving a negative review for something I don’t know enough about.

If you know what you’re doing, how to use such a fine and fragile cutter, I think this just might be what you’re looking for.

I have a drill press with a router table adapter for it. this is a perfect addition to my bit collection. Works great, sharp and does exactly as expected.