Recommended Router bits for CNC
Selecting router bits for your CNC can be confusing since many brands, types, and sizes are available.
When buying bits, I look for three things:
1. Profile accuracy
- Is the v-bit angle accurate?
- Does the v-bit have a sharp, pointed tip for details?
- Does the ball nose, core box, or round nose bit cut a nice smooth semi-circular groove?
- Is the cutting diameter accurate?
2. Performance
- Does it produce a clean, crisp cut?
(Some types of wood are hard to route cleanly, so it's not always the bit.)
- How long does the edge last?
(It's essential to use appropriate feed and speed rates since the wrong settings can quickly dull a bit.)
3. Price
- The cost of bits adds up, so saving a few bucks is nice, but quality and price are usually related.
Below are some of the bits I frequently use in my shop and classes. They have performed well in both situations, especially when working on a small-format (benchtop) CNC machine.
I've found much truth in the saying: "You get what you pay for."
That said, some brands are priced very competitively and still perform well. I've started using some of them regularly and have included a couple of them in the list below. ​
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– Randy Johnson –
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Up Spiral End Mills
End Mill - 1/4 dia.
Whiteside-RU2100
Two flutes - solid carbide
Spiral Up Cut
Cutting Height- 1"
Shank - 1/4" dia.
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- My go-to for small pockets in solid wood.
Use the 1/2 dia. version for larger pockets