CAMM-1 Servo GX-24 Desktop Vinyl Cutter
This basically a plotter with a x-acto on the end that can cut through signs and the like. It is one of the basic machines of the FabLabs, and you might find one in your neighbourhood. There are FabLabs in NYC, Boston, many cities in Europe, etc. Check http://en.wikipedia.org/wiki/Fab_lab if there is one in your neighbourhood.
3M #1126 copper tape with conductive adhesive
This is another material that you might find in a local FabLab. Otherwise you could improvise with other conductive sticker you might find.
Your circuit design in .png format.
Step 1: Design Constrains for the Circuit
To use the cad.py software that goes with a lot of the FabLab machines, save your circuit as a .png. If you're using Eagle as your design software, you can output the layers that you want to use as a monochrome image, and use a 500 dpi to make sure you get enough resolution to contour the part.
Use the .png as your input, and after clicking the cam button select .camm (for the roland) as your output.
For the vinylcutter you only need one contour, check all of the contour lines to make sure that none of your paths are being skipped. If the contouring is sticking two of your parts together, you can down the tool diameter to something untrue as a hack-- the tool really is 0.01, but changing it to for instance 0.005 will probably keep the integrity of your circuit even if all the parts might be a bit smaller than you called for. Similarly, if your circuit has a lot of spacing, you can make your circuit wider by pretending that the tool is wider than it really is.
Step 2: Cutting the Circuit
Step 3: Moving Your Circuit Onto a Base
When you lift the circuit off, it is best to lift the circuit at a more obtuse angle to minimize the amount of traces accidentally left behind.
The circuits can be placed on any more or less heat-resistant surface. This can be glass, acrylic, wood or even cardboard or fabric. The surface will get hot when you solder on your components, but if you can solder quickly you can have some pretty sensitive surfaces as a base.
Step 4: Fixing Your Circuit to the Base
Then you will want to remove the protective masking tape, which you can do by peeling it off at as sharp an angle as possible, as not to rip up any of the traces. If the copper is lifting as you peel off the masking tape, push the masking tape back down and try to rub over the lifting area some more.