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Recommended feeds for PCB tools

Posted on March 16, 2018.

Addressing the questions about what feeds to use when milling the boards, we decided to throw together a little table with feed recommendations for the tools Cirqoid uses to mill and drill PCB laminate. These are the values that worked well for us. Happy milling!

Drills

Drill bits are only used to drill holes. They are supplied with green stop rings.

Drill diameter Feed
0.2-0.3mm 250 mm/min
0.4-4.0mm 300 mm/min
4.0-5.0mm 200 mm/min

 

15º milling end mills

These end mills are used for isolation milling.

End mill diameter Feed XY Feed Z Feed arcs
0.1mm 75 mm/min 50 mm/min 30%
0.13mm 150 mm/min 75 mm/min 30%
0.18mm 400 mm/min 150 mm/min 30%
0.254mm 1000 mm/min 300 mm/min 30%

 

90º V-tools

90º V tools are also used for isolation milling. They come with orange stop rings.

End mill diameter Feed XY Feed Z Feed arcs
0.10-0.15mm 300 mm/min 100 mm/min 30%
0.2-0.5mm 800 mm/min 300 mm/min 30%

 

Rub out end mills

As the name suggests, these end mills are used for rub out (removing large areas of copper). Their stop rings are purple.

End mill diameter Feed XY Feed Z Feed arcs
0.4mm 800 mm/min 250 mm/min 30%
0.8-2.0mm 1000 mm/min 300 mm/min 30%

 

Contour end mills

And these end mills separate the board from the laminate panel. They have yellow stop rings.

End mill diameter Feed XY Feed Z Feed arcs
1.0-2.0mm 300 mm/min 100 mm/min 50%
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