My King KC-20VS-2 definitely has plastic gears, can't speak for the Craftex CX600. Due to inadequate workpiece holding (operator inexperience!) the workpiece shifted during a heavy cut and stalled the motor. The photo shows the damage to one of the plastic gears. The local dealer supplied a new gear under warranty, and it wasn't that hard to replace. But the mill still has a noisy low range, so another plastic gear, deeper inside and harder to change, was also damaged and is on order. Weiss, who seems to be the Chinese maker, admits these plastic gears are breakage prone in their promotion of their newer, DC motor belt drive mills. The Grizzly G0704 looks to be the same mill, so they have the gears available if King doesn't. But I would have gone with a different mill if I'd known about the plastic gear issue.
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