Compression Bits Part 3

How do I use a Compression Bit correctly?

While compression bits are the tool of choice for cutting double-sided laminates, it is essential you use the tool correctly. There are cutting edges on the bottom of most tools, therefore a direct plunge into the material will be fine. But let’s consider the spiral itself for a moment.
The spiral of an up-cut tool will clear the waste material from the hole which will prevent heat build up and tool dulling.
The spiral of a down-cut or compression bit will force the waste material down into the hole, causing excessive heat and will soon damage the cutting edges.
The solution is to ramp these cutters into the material away from the final edge that you will be cutting.
A plunge is direct vertical movement into the material, a ramp is a plunge incorporating a forward movement. By ramping the trailing side of the tool is not enclosed and allows the waste material to come out behind the tool.