When it comes to making cuts with a miter saw, there are certain types of cuts that you should never attempt. One of these is known as a "blind cut," which is where the blade extends into the material without any support from the back side. This can lead to kickback and can be very dangerous. Another type of cut that you should never make on a miter saw is known as a "pinched cut." This is where the blade becomes pinched between the workpiece and the fence, which can also be dangerous. If you're not sure what type of cut you're attempting, it's always best to consult with someone who does before proceeding.