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Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Are you meaning the hand paper shear type attached to a table? if so i would think only for the 1/32 inch boards. for 1/32 i was able to use aviation snips, but even with micro grain carbide G4 fiberglass seems to dull tools. When i was a professional CNC punch press operator, we could see our punches and dies getting dull and drawing more hydraulic force in a single short run.
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
I have used a manual paper shear for cutting circuit boards; paper (srbp) board almost always splinters, glass (FR4) is best done with one quick shear.
More reliable (even works for acrylic) is to score both sides with a (safety) knife, put the board at the edge of a table or counter top with a sharp (not curved) edge with the line along the edge of the table/top hold down the board with a something hard (wood, a book etc.) then with one swift blow of a book on the overhanging board I usually get a nice clean break.
Registered Member #135
Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
For FR4 you're supposed to use a diamond cut router bit, that's what I use on most boards. For the really thin boards, metal shears work fine, leaves a nasty edge though, but that can be sanded off.
Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
Just got a diamond-blade tile cutter for $99. Works very well and makes some clean cuts on the PCB FR4. I thought I would get one for $20 off of craigs list, but the guy never got back to me.
Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
I have to say, I've used shears, dremmel and box cutters. This diamond cutter is great. I would have gotten the mega-shear, but it was $330 and $60 to ship. This was $99.
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Cutting pcb
