I bought this thru Amazon about a year ago. I've tried using it a few times but I've never been able to level it properly and get poor results with the dado. After looking at it further the insert is in fact warped. I've made my own insert now out of MDF and it works much better. If the Bosch insert was level (like the insert I received with the table saw), I'd give it five stars, but it's useless as is when trying to do any sort of fine wood working.
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