Homebrew PCBs

Woodworking equipment (sliding compound miter saws, for example) use a
laser to project a cut line on the material.  It seems to work pretty
well in light or dark conditions.  I've seen low cost laser levels
(<$40, iirc) that could be adapted to this.  Two of them aimed at the
drill bit would create a crosshair target.  They wouldn't need to be
at right angles and height of the material shouldn't be an issue. 

Phil