I've worked with solid carbide spiral flush cutters for a long time. It cuts cleaner than any I've used in the past. In the past I've used a lot of up and down spirals to work with patterns. They always cut well, but produce more sawdust than shavings. They generally generate some vibration (rattle) when cutting. This attachment produces extremely fine, clean chips because it cuts and runs very quietly and without vibration. I am currently using it to make 4.5 inch thick laminated sheets where each new cut needs to be very clean and precise. Each new cut serves as a template for the next layer. So far the results have been flawless.