Amazon.com: CNC Laser Head 7W Blue Laser Module, Used for Engraving Wood and Stainless Steel, can Cut 3mm Plywood, with PWM/TTL : Arts, Crafts & Sewing
OXLasers 450nm 15W Blue Laser Module 15000mW Laser Head for DIY Laser Engraving Cut with PWM Purple Heat Sink Cutting Plywood - BeamQus