Poor design
I wanted to sharpen my box of drill bits - not possible! The instructions tell you to run the motor for max 2 mins, then leave for 8 mins to allow it to cool. If you run for any longer the thermal overload cuts the motor out and you have to wait for ages for it to cool down, It's ok for sharpening one or two drills, but I think it will take a month to sharpen my boxful!!
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