In CNC woodworking, the CNC Spoilboard is a replaceable panel installed on the worktable. It is an auxiliary board used on a CNC router, also known as a CNC sacrificial board. It is usually used to protect the surface of the original worktable of the CNC router machine from damage by cutting tools while providing a stable support platform for the workpiece.

What material to use for a CNC router spoilboard?
Spoil boards are usually made from softer materials, such as medium density fiberboard (MDF) or low density fiberboard (LDF).
MDF board: Higher density, smooth surface, better strength, and durability, suitable for machining that requires higher stability.
LDF board: Lower density, lighter weight, better porosity, conducive to vacuum suction, suitable for processing that requires better suction effect.
The thickness of the spoil board is usually determined according to specific needs, but it is generally recommended to be at least 3/4 inch (about 19 mm) to prevent accidental cutting through.

What is the purpose of a spoil board?
1. Protect the worktable: Spoilboard is a consumable board laid on the worktable of the CNC router, directly bearing the cutting force of the tool to prevent the tool from scratching or damaging the original expensive worktable surface below during workpiece cutting. For example, when hollowing out and engraving, CNC router bits may penetrate the workpiece. At this time, spoilboard can effectively prevent the CNC router bits from contacting the table.
2. Provide a stable working surface: spoilboard provides a flat and solid foundation for the workpiece, helping to ensure machining accuracy and surface quality

3. Enhance vacuum suction effect: For CNC routers equipped with vacuum hold down systems, the porosity of the spoilboard helps the vacuum suction effect, so that the workpiece can be more firmly fixed on the worktable, ensuring the stability of the workpiece during processing.
These double-sided vacuum pods are securely suctioned on the spoilboard and hold the workpiece at the top. In this way, the workpiece is fixed very stably, preventing the workpiece movement during machining and improving cutting accuracy.

4. Easy to replace: The spoilboard can be replaced regularly to keep the worktable clean and perform well.

How to surface CNC spoilboard?
The surface of the spoil board will be uneven due to multiple cutting, and the surface needs to be planned regularly (usually once every 20-30 times). At this time, a spoilboard router bit is needed.These spoilboard surfacing bits use multiple cutting edges to quickly trim the surface of the board and restore its flatness.

The spoilboard plays a protective and supporting role in CNC cutting and is an important part of ensuring cutting accuracy and CNC router life. Spoilboard maintenance is necessary.
RicoCNC can offer different sizes of CNC spoilboard surfacing router bits if you are looking for spoilboard router bits. Welcome to contact us!

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