CNC Sacrificial Board / Spoilboard / Wasteboard

Upgrade your CNC workholding setup with this premium, heavy-duty 18mm MDF Spoilboard. Designed specifically for desktop CNC routers, this physical wasteboard offers an ultra-secure, repeatable, and stable fixture system to keep your workpieces perfectly flat and firmly locked down during intense carving, milling, and engraving jobs.

🛠️ Key Product Features:

• Dual-Sided Functionality: The top surface features a highly versatile layout combining clean M5 mounting holes and M6 screw threads, letting you easily align materials, fix fences, or attach standard toe clamps and cam clamps.

• Integrated Metal T-Nuts: The bottom side is pre-fitted with robust, industrial-grade M6 T-Nuts securely nested beneath the surface. This ensures your clamping screws hold strong under high torque without stripping the wood or pulling out.

• Premium 18mm MDF Construction: Made from uniform, high-density Medium Density Fiberboard. Its 18mm thickness provides exceptional rigidity, minimizes warping, absorbs vibration, and gives you plenty of material depth to resurface and flatten the board multiple times.

• Sacrificial Layer Protection: Protects your aluminum or stock CNC base bed from accidental tool paths and through-cuts, ensuring longevity for your machine.

📐 Specifications:

• Material: High-Density Unfinished MDF
• Thickness: 18 mm
• Top Surface Hole Formats: M5 Clearance/Mounting Holes & M6 Clamping Holes
• Bottom Surface Hardware: Metal M6 T-Nuts (Pre-installed)

📦 What’s Included:

• 1 x Fully Machined Physical 18mm MDF Spoilboard with Pre-installed Bottom T-Nuts.

📌 Please Note: As with all premium CNC setups, it is highly recommended to run a light face-flattening / surfacing toolpath across the top of this board once mounted to your machine to guarantee perfect parallelism with your CNC spindle.

Don't see your machine's size listed? We accept custom sizing requests—send us a message!