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Michel designs and builds a large-format CNC router from scratch to cut aluminum sheet stock for a catamaran being constructed in a home workshop.0:23 The machine's table measures 3 meters long, built for a large cutting area at low construction cost with sub-millimeter precision.0:05 Michel fabricates the steel base frame himself, welding with cross-bead technique and constant bubble-level checks to prevent warping, then sends tube cuts to a machinist for final squaring.1:37 Laser-cut steel panels — sourced from an outside shop, since the CNC didn't yet exist — form the electronics enclosure.11:22 The drive system uses NEMA stepper motors rated at 36 kgf paired with rack-and-pinion axes; Michel 3D-prints a drilling jig to align rack mounting holes to the required 20 mm spacing.6:33 Electronics include two 48-volt/10-amp power supplies, a 12-volt controller board, individual stepper drivers, and a spindle with a VFD speed controller; all electronic components were ordered through Ocean Tech.9:25 The machine is designed to accept either a milling spindle or a plasma torch head.8:23 Michel uses two AI tools cross-checked against each other to calculate microstep and current settings for the drivers.15:56 On first power-up, the gantry moves smoothly on both Y-axis motors.17:55 A complete design package with 3D viewer, calibration calculators, and step-by-step instructions is available for purchase via the Instagram account @minha CNC.15:06

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