Vacuum Fixture Table for CNC 3018

This is a vacuum fixture table designed specifically for CNC 3018 machines, optimized for PCB milling and engraving. It allows PCBs and thin flat stock to be held securely using vacuum, keeping the board perfectly flat during machining and greatly simplifying two-sided alignment.

The fixture features a dense hole pattern for uniform suction distribution and a perimeter sealing surface. By eliminating clamps and tape, it improves surface accessibility, repeatability, and overall machining accuracy.

The table supports PCB plates up to 150 × 200 mm, making it ideal for prototyping single- and double-sided boards.

Key Advantages

• Keeps PCB perfectly flat during cutting and engraving

• Greatly simplifies double-sided PCB milling alignment

• No clamps or tape interfering with the toolpath

• Uniform vacuum distribution across the work surface

• Designed specifically for CNC 3018 form factor

Specifications

• Maximum workpiece size: 150 × 200 mm

• Vacuum connection: 1” (25.4 mm) suction duct

• Application: PCB milling, engraving, light flat stock machining

• Mounting: Directly bolts to the CNC 3018 bed / T-slot profile

Recommended Print Settings

• Material: PLA/PETG

• Layer height: 0.2–0.28 mm

• Infill: 20–30%

• Perimeters: 4–5 (important for vacuum sealing)

• Top/bottom layers: ≥ 6

• Supports: Not required

• Print orientation: As shown

Usage Notes

• For best performance, use foam tape or rubber cord around the perimeter as a gasket.

• A sacrificial spoilboard (MDF, acrylic, or FR4) can be placed on top if needed.

• Works well with shop vacuums or dedicated vacuum pumps.

Disclaimer

This fixture is intended for light-duty CNC work, such as PCB milling and engraving. Holding force depends on vacuum source, sealing quality, and surface flatness.