Tubular Heaters Keeping Machined Parts Within Tolerances Problem: A machine shop was involved in machining parts to very critical tolerances. The ambient temperature of the machine shop was not closely maintained. The customer was having a problem holding tolerances due to: The varying temperatures of the parts being machined The expansion of the parts from the heat produced during the machining operation. Solution: Prior to Watlow's involvement, the cutting fluid was not heated. This was the cause of their problems. By heating the cutting fluid and controlling its temperature, the expansion/contraction problem of the parts being machined and minimized. The heater chosen was a stock tubular element formed in a special configuration with bulkheads. The heater had the required wattage, yet h

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