I have found that conventional milling works better because the rubbing action burnishes the surface and helps to stop the cutter eating the chips.
Use plenty of air to keep the chips clear.
If there are many parts to do, cutter wear can become significant, so I use solid carbide.
The coated cutters will give a better finish but are much more expensive, and they appear to have a more finely ground finish.
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Super X3. 3600rpm. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way. |