Gallery, Projects and General > How do I??

PCB pad cutter

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PekkaNF:
Interesting and very timely post for me! I have't seen island type construction, dead bug and Manhattan style I am familiar with.

I don't understand why diamond hole saw is not popular? Maybe it does not work well with manual tools, but I think tat it should work well with a mill/drill.

What ID/OD are you aiming at?

BR,
Pekka

vtsteam:
The teeth(tooth if D bit) should have zero rake for copper to prevent grabbing. Basically they should act as scrapers. You don't need much relief either.

modeng200023:
RS Components used to sell pad cutters in two sizes but I can't see them now.

John

timby:
These are cheap but don't have a pilot so probably difficult to use freehand.

https://www.ebay.co.uk/itm/6mm-Diamond-Coated-Drill-Bit-PCB-Pad-Cutter/293782513089?hash=item4466cd65c1:g:NosAAOSwOqhfh0Rf

Mike K:
I made this:

 

Three teeth.  Done with a Dremel.  Heated, quenched, tempered, briefly honed.

Not terrible, but more tearing than I had hoped:
 

I drilled with my mini-mill at low RPM.  Didn't grab at all.

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