What Is a Hybrid Spoilboard? A hybrid spoilboard combines two workholding systems into a single platform: a grid of threaded inserts for clamps, vises, and fixtures, paired with a sacrificial HDF (High-Density Fiberboard) surface that absorbs the final pass of your cut and protects your machine bed. The result is a surface that works for both precision fixturing and freeform cutting — without needing to choose between one or the other. Most CNC users run into the same problem: a bare aluminum T-slot table is great for clamping but impossible to surface-plane, while a plain spoilboard is easy to resurface but offers no fixed reference points. The PRONAX Hybrid Spoilboard solves both at once. Product Overview The Genmitsu PRONAX Hybrid Spoilboard is a bolt-on platform kit designed specifically for PRONAX Spark and PRONAX Forge. It mounts directly to the PRONAX Y-axis modules using the machine's existing rail slots — no drilling, no modification to the frame. The platform consists of an aluminum extrusion base frame with front, rear, and center crossbars, topped with custom-cut HDF panels held in place by upper and lower clamping strips. The HDF surface can be resurfaced with the spindle and replaced when worn — standard spoilboard workflow, compatible with the machine it sits on. Key Features Dual-function surface — threaded insert grid for fixturing, replaceable HDF for through-cuts and surfacing Direct bolt-on fit — mounts to PRONAX Y-axis modules; no frame modification required Replaceable HDF panels — surface and replace independently without disturbing the base frame Integrated cable management — drag chain bracket and cable routing anchor included Leveling feet — 4× rubber-backed feet keep the platform stable on uneven benchtops Machine-specific sizing — separate kits for Spark (6090) and Forge (8080); not interchangeable Compatibility Machine PRONAX Spark PRONAX Forge Fits ✔️ ✔️ Non-PRONAX machines ❌ ❌ The Hybrid Spoilboard is engineered to the exact rail spacing and Y-module geometry of each PRONAX platform. It is not compatible with other CNC machines. Assembly Overview Installation follows four steps and requires no tools beyond the included hex keys: Install leveling feet and drag chain bracket onto the center crossbar, then arrange front, rear, and center rails on a flat surface. Pre-fit HDF panels between rails using M5 × 20 screws — leave slightly loose at this stage. Pre-fit clamping strips onto HDF panels using M4 × 10 screws — leave slightly loose. Mount Y-axis modules onto the platform frame using M5 × 20 screws, align everything, then torque all fasteners in sequence.
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