It must be 5 years since i looked at this subject the first time. During that time there have been just one new marking ink and Cermark and Thermark are now integrated to one product. All these products are expensive (and good) but the cheaper alternative has always been spray-on Molybdenum Disulfide.. Some claim it is far inferior and it is possible that the perimeter range for these alternative products may be narrower. This session investigates the chemistry underpinning this technology and tests novel products that posses the suspected chemistry for success. To make things fair and comparative I use the same lens, power and speed settings throughout.

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