The Right Route to CNC Routing
August 15, 2011 | 10:40 pm CDT

1. Surface both sides of the spoilboard. This will remove inconsistencies in thickness, improve air flow and gives the spoilboard more surface to grip.

2. Isolate unused areas of the table. Configure the gasket to minimize the open area and place thin, non-porous material on the unused area.

3. Understand and utilize vacuum gauges. Establish maximum vacuum at the pump with the valve to the machine closed. Note the drop in pressure when the machine is running.

4. Choose the correct part holding system. Available systems include vacuum cups or clamping systems for CNC machining centers, vacuum cups for flat table routers, and for either type of machine, custom spoilboards can be used. Work with your supplier to ensure you are using the optimal technique.

5. Chipload equals the thickness of the chip removed. To increase the chipload, increase the feed rate/decrease the rpm/use less flutes. To decrease chipload, decrease the feed rate/increase the rpm/use more flutes.

Source: Bill Blackmon, Busellato CNC product manager, Casadei Busellato. For more information visit or call (336) 854-1211.
For suppliers of CNC routers, visit

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