When the residue level is bad enough to infect the molded part? When the mold locks up? Most molders recognize the old adage of an ounce of prevention is worth a pound of cure. A visual inspection after a measured cycle count to determine residue build up and plating wear or any significant track marks will be a good start to ensure mold cleaning is done before incurring expensive mold tooling. The use of a mold cleaner during the molding process helps minimize the frequency of the necessity to remove a mold from production. Manual cleaning produces the best results, but requires time and sometimes can lead to damaged molds by hurried handling. Applying a mold cleaner during production on predetermined cycles helps extend maintenance intervals for manual mold cleaning and reduces the effects of residue migration onto the molded parts. Choosing a cleaner that works best depends on whether the mold is warm or cold. A mold cleaner uses solvents that will evaporate too quickly on warm molds and may not be as effective. A mold cleaner that has solvents that evaporate very slowly are more effective on warm molds but when used on cold molds extra time may be required to wipe off residue off the cold mold. Slide offers mold cleaners and degreasers for applying on hot and cold molds. Slide knows the proof of a product's effectiveness is right at the mold and for that reason FREE SAMPLES for the asking are available for your trial evaluation before you buy.