Compression cutting utilizes a specialized cutting tool, often a router bit, that combines both upcut and downcut spirals. This unique design provides a shearing action rather than a traditional "chopping" action.
How Compression Cutters Work
The defining feature of a compression cutter is its alternating flute pattern.
- Upcut Flutes (Bottom): These flutes pull material upwards, clearing chips and providing a clean cut on the bottom surface.
- Downcut Flutes (Top): These flutes push material downwards, preventing tear-out and splintering on the top surface.
The combined action of these flutes compresses the material in the middle, resulting in a clean, virtually burr-free cut on both sides of the workpiece.
Advantages of Compression Cutting
- Clean Cuts: Minimizes tear-out and splintering, especially important for veneered plywood or laminated materials.
- Reduced Vibration: The opposing forces of the upcut and downcut flutes help to stabilize the material during cutting.
- Improved Edge Quality: Results in a smoother, more professional finish.
- Suitable for Various Materials: Works well with wood, plywood, MDF, acrylic, and some plastics.
Applications of Compression Cutting
- Cabinet Making: Creating clean edges on cabinet doors and panels.
- Furniture Making: Producing high-quality furniture components.
- Sign Making: Cutting intricate designs with minimal tear-out.
- CNC Routing: Ideal for CNC machines where precise and clean cuts are essential.
In summary, compression cutting is a method that employs specialized tools with both upcut and downcut spirals to create clean, virtually burr-free edges on various materials by compressing the material during the cutting process.
