Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dangerous to use

This jig is dangerous. There is no way to clamp the workpiece to the jig. When you push the jig and workpiece through the saw blade, the saw blade wants to pull the workpiece away from the fence and into the blade. This is very unsafe. If you manually hold the workpiece against the fence your precious digits will be much too close to the blade.