any recommendations for a low cost SMT reflow hot plate or oven (boards no bigger than 12x12inch? any that may be programmable? some of my designs need to get smaller which forces me to look into SMT. each pcb only has a handful of SMT's, but i need quality/reliable end product and using the iron may be futile. i'm game for a DIY kit, or even building my own oven with programmable temp-step controller.