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Can I build an aluminum fuel tank with the xTool MetalFab laser welder and CNC? Ep. 693

August 30, 2026 · 18 min · 7K views

What this video covers

The xTool MetalFab laser system, which combines CNC cutting, laser welding, and laser cleaning, serves as a new fabrication tool for refitting a 44-foot catamaran named Spiffy.0:20 After completing a mandatory safety course and unlocking the machine with a USB key, the setup process involves configuring the XTool Studio software and selecting appropriate gases for different materials.2:44 Compressed air serves as the primary gas for cutting aluminum and stainless steel, while low carbon steel requires pure oxygen for thicknesses exceeding two millimeters.5:12 The CNC features a 2x2 foot work area with side pass-throughs for longer stock.6:47

The laser welder offers significantly faster welding speeds than traditional TIG welding with a shallower learning curve.12:31 Testing on 2mm aluminum coupons confirms the machine can produce airtight welds, verified by a 3 psi pressure test following ABYC standards.16:08 The system enables the fabrication of custom brackets, backing plates, and fuel tanks, reducing reliance on external laser-cutting services.16:48 The project confirms the feasibility of using the MetalFab for constructing marine-grade aluminum fuel tanks.16:17

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Boats in this video

Antares Yachts 44Their boat

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