Materials
Standard Materials
Hobarts
One source for Acrylic for cutting is Hobarts
See the mailing list
Fred Aldous
Another place local within manchester is Fred Aldous
They sell some perspex / bits of wood, and glass paint for experimenting with pcb solder masks
Special Materials / Cutting
Burnable Materials / Mahogany
With some types of material one approach to cutting is to use a low power setting but with multiple passes
However one thing to watch out for is that you may end up with a build up of carbon along the cut line
Acrylic
One approach to making a 3D thing is to use Acrylic then glue the parts together.
3mm Acrylic A4 size is fairly cheap from Fred Aldous about about 3 pound
Acrylic glue appears to work by softening both sides and melting them together. But it’s important to use sand paper fine grit, or perhaps the belt sander to get a smooth edge first