A carbon oxygen hydrogen motor comprises an enclosure, a combustion chamber, and a plurality of injectors. The dispenser includes at least one dispensing unit to supply a dispensing material on a substrate, at least one support member to support and align the dispensing unit, and a plurality of syringes mounted on each dispensing unit. A second coating may then be applied to form a coated or repaired surface. A printer equipped with this head prints swathes of large width with good juncture.