Brussels fablab has a couple of machines with a cutting area of: 1200 mm x 900 mm, 100 W en 180 W Does 6mm birch no problems and costs 40€/hour of cutting time. http://www.fablab-brussels.be/fablab/lasercutters/ You'd probably bring your material of choice pre-sawed to a manageable size so you could get it in the car. Come to think of it I think we had this conversation a few months ago (or was it with @fpex ?)... Just to give some idea of the market anyway!