AV8R
New member
- Apr 18, 2010
- 124
- 0
:iagree:But I still don't like the plastic gears in the plate. It's like buying a pressure washer with plastic fittings instead of brass or stainless steel.
Plastic is probably used not for the reasons you think (to save money). Newer plastics can actually be more robust than metal in an application like a gearset. Plastic gears are quieter, run cooler, weigh a lot less (less rotating mass means more power to the pad) and can be made to outlast brass (which has a bad habit of developing lash very quickly) or stainless (which is also a relatively soft metal). They could have stepped up and used aluminum alloys that are very, very hard and very light, but the costs associated with these are high. Engineering is an art...they may know that the plastic they chose will outlast the motor in the tool so using something better may be false economy.