Gallery, Projects and General > How do I??

PCB pad cutter

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Mike K:
Hi guys,

I'm looking to do this:



YouTuber AndyDaviesByTheSea did it by grinding a broken 1/4" drill bit.  I went that route, but it grabbed too much for my liking.  And since I've made D bits in the past that worked well, I thought I could do similar for this.

I took some 1/4" drill rod, faced it, and drilled the end 0.200".  It's just a tube right now, but I'm thinking I can put the "D bit" angle on it?  What do you think?  It really only has to remove the top layer of copper (a few thou, I think).

-Mike

russ57:
I'd think that you would need some "teeth" - just filed ought to work

-russ

modeng200023:
https://www.eevblog.com/forum/beginners/my-deluxe-island-cutter-)/

This might help

John

awemawson:
Could you use a spot weld removing tool without the centering bit?

Mike K:
Yes, I know teeth, but I wasn't sure how best to do that.  That EEVBLOG thread helps.  Had considered a spot weld cutter, but OD and ID aren't what I want.

I'll give cutting the teeth a try.  I haven't done that before, it was why I asked.

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