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Title: 2 1/2" Blades Slip
Review: Ok FEIN, when are you going to eliminate blade slippage by upgrading the design of the drive pattern from the current Round to a Star drive? It is my opinion that you are too slow in responding to customer requests to improve the drive design and I reluctantly returned my unit because of frequent slippage. All of you newer blades have the Star drive but the power head still relies on compression, thus friction by the washer and bolt to hold the blade in place. Your current solution is an adapter, which is nothing more than a washer that has sandpaper like surface/carbide particles to increase the friction. Not an acceptable solution for and expensive tool.When you finally get around to improving the design, I will purchase a machine again but I will definitely wait until the new design is released.
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