In article ,
Mike B someone@noplace wrote:

I looked at some of the videos on youtube and some people made negative
comments
about plastic gears and so on.

Plastic gears are not "always innately" bad. On some machines they serve
as the mechanical fuse, so if somebody decides to tackle twice as much
as the machine can handle, the plastic gear fails. The operator making a
video to show the world rarely admits that he was abusing the machine
when the gear broke, of course.

If replaced with another (cheap, buy a few spares, it's a fuse) plastic
gear, the rest of the machine keeps working.

If "upgraded" to metal, a more expensive or inconvenient part of the
machine may fail "next time." There may also be excessive wear on metal
parts that were expecting to run against plastic.

Not to say there can't be or are not crappy machines which happen to
have plastic gears, but be careful of thinking "plastic == bad" in a
knee-jerk manner.

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