Welcome to CNC & Router Systems on Foam Streets—the neighborhood where foam blocks turn into crisp logos, smooth contours, and perfectly repeatable parts. CNC routers bring “digital hands” to your shop: you sketch in CAD, generate toolpaths in CAM, and watch the machine carve, pocket, profile, and sculpt with steady precision. Whether you’re cutting EPS for giant event letters, shaping XPS for scenic rock walls, or milling high-density urethane for mold masters, CNC unlocks speed and consistency that hand tools can’t match. Here you’ll find articles on choosing the right spindle, bits, feeds, and hold-down methods for light, messy materials—plus dust control, safe workflows, and finishing tricks that keep edges sharp and surfaces paint-ready. From simple 2D sign work to 3D terrain and bevelled panels, CNC makes big foam builds feel professional and predictable. Grab your calipers, fire up your vacuum, and let’s route some clean lines.
A: Often an O-flute for clean chip evacuation; ball-nose for 3D finishing; V-bits for bevels.
A: The tool is rubbing—try a sharper bit, higher feed, lower RPM, or fewer finishing passes.
A: Vacuum + spoilboard, perimeter tape, pins/dowels, or tabs/onion-skin to keep parts from shifting.
A: Keep chips forming (not dust), use sharp tools, and don’t let heat build up in one spot.
A: Simple 2D profiles—letters, badges, flat panels—before moving into pockets and 3D contours.
A: Yes—foam debris is airborne and static-prone; extraction improves cut quality and shop safety.
A: Very smooth with a finishing pass + light sanding; then seal/prime for a paint-ready surface.
A: Similar, but density and chip behavior differ—test cuts help dial in feeds/RPM per foam type.
A: Account for bit diameter, use test coupons, and add reliefs/dogbones where needed.
A: A sacrificial surface you cut into—surfacing it flat makes depths consistent and saves your table.
