Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bit Slipped Once but Nice Otherwise

The router is very powerful for its size and just awesome in a lot of ways. I would definately buy anothe one. While there are a lot of nice features I wish there was a better mechanism for preventing the bit from slipping. I was routing a number of mortises with a template and the flush trim bit insidiously slid from a 1/2" depth to nearly 7/8" depth over the morning. I had tightened the bit as tight as I could with the supplied wrench before doing the work. Now I will have to fill and re-do the mortises. Bad on me for not noticing sooner but also bad (I believe) on the manufacturer for not making this better. As a home hobbiest I am certainly not an expert carpenter, but I'm usually decently inclined to mechanical stuff and I don't think I did anything wrong in securing the bit.