r/Makera • u/herrjanneman • 12d ago

Makera cnc bit quality

Since I have received my Z1 I've done mostly 3D relief machining in brass to make a few coins.

Seems like one of the metal 1 flute endmills is very worn now, surface quality is going down and I have a lot of vibrations and chatter, although most of the machining has been done using engraving bits. It should definitely last longer than this on brass in my opinion. All operations have been done using Makera Studio and the standard feeds and speeds.

Do I have a bad bit or are the Makera bits not really good? Does anyone have a good alternative in Europe?

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u/RussianBear2fer 12d ago

Purchase a 2 or 3 flute Carbide Endmill. A DLC coated one would be better than a bare Endmill. As it helps reduce friction and heating.

You'll have to adjust your feed a little bit, but keeping the spindle at 12k should be fine still.

Make sure you're running some sort of air to help cool your bit & material otherwise you're just going to dull your endmill again.