How to cut the PCB's?

[R O Tiree]

Tile cutter, like others have said.  There's a reservoir on mine that you fill with water (for cooling the diamond blade), so there's no issue with inhaling glass-powder dust.

[Jdansti]

Usually a Dremel cutoff wheel, but sometimes I get a decent cut by just slowly nipping with a pair of wire cutters.  When I use the Dremel, I clamp the PCB to a thin piece of plywood which is clamped to my work bench.  The PCB extends past the edge of the plywood so I only cut the PCB. I do this outside with a fan blowing across the work and I wear a face shield.  There's nothing like having a piece of broken cutoff wheel embedded in your neck or eye!

[Perrow]

Dremel + diamond cutting wheel.

[deadastronaut]

[defaced]

They work ok if you flip them over and use them like a table saw 

[Perrow]

I said use a diamond saw, don't you listen?

[Ibanezsr500]

http://www.vermeer.com.au/new-equipment-details.php?ProductID=187&CategoryID=65

You are welcome. 

[deadastronaut]

^ job done!..very efficient too....

[Colonel Angus]

I was using one of those for a while but I kept on getting FR4 everywhere. Works great for tight corners and neat edges, just keep your pets away from it.