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[–] 2 points 6 days ago (1 child)

I'll concede it's increasingly rare as a reason, but if you have a plastic part in an otherwise well-made device, it can be a good thing. If that's a common point of failure, having it fail gracefully 5 years in with a cheap replacement is better than having it fail in 10 years at 8 times the price, or potentially blow apart in a housing of some sort and take other parts with it.

Some people would disagree it's a "well-made device" but when I let a piece of wood jam the jointer attachment on my old Shopsmith woodworking machine, I was extremely happy that the power coupler was not sturdy metal.

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