Alright so here is what i think i need:
A tribo powder coating gun modified for a smaller stream of material.
A scanning electron gun similar to what is in a cathode ray tube.
A vacuum chamber
A focusing coil and direction coil for guiding the particles out of the tribo gun.
A signal generator to draw me a circle to test with.
A rotary vane 2 stage vacuum pump.
A radiant heat source
Basically the electron beam and particles are directed to the same location.
The beam creates a negative charge on the surface and the particle sticks to that location.
A radiant heat source could help stick the materials together/fuse them?
I'll see how long it takes me to source the parts.