iDR Laser Engraver

thingiverse

I designed this project to reuse my discarded materials. The design was inspired by the ZDV Laser Engraver, available at https://www.thingiverse.com/thing:2703455 thanks to ZhilDV for creating it. For small laser engravers under 100 cm square, you can use 2020 aluminum extrusion, even though using 3030 V-Slot aluminum profile will produce a more robust structure. A control board from the Creality Ender 3 3D printer will be used as the controller, which runs on Marlin-based firmware instead of GRBL. This will provide a nice LCD display and the ability to print from microSD cards. The laser module is a 5.5-watt unit available at https://www.aliexpress.com/item/High-Power-450nm-5500mW-12V-TTL-Adjustable-Focus-Blue-Laser-Module-DIY-Laser-Engraver-Accessories-5/32855784586.html?spm=a2g0s.9042311.0.0.2edb4c4dv6uPcf. The laser PWM signal is derived from the part cooling fan signal using the M106/M107 command. Since this board uses a 24V power supply, I took the 5V PWM signal from the "Gate" pin of the fan mosfet to comply with the input voltage required by the PWM laser module. PLASTIC PARTS: * FrontRight Leg & RearLeft Leg: 2 * FontLeft Leg & RearRight Leg: 2 * Y Right Gantry: 1 * Y Left Gantry: 1 * X Gantry Main: 1 * X Gantry Laser side Plate: 1 * Laser adjuster: 1 * X End Stop Switch case: 1 * Upper Controller case: 1 * Lower Controller case: 1 MECHANICAL PARTS: * 3030 V-Slot 46cm, Rear/Front profile: 2 * 3030 V-Slot 55cm, Right/Left profile: 2 * 2020 V-Slot 49cm, X axis: 1 * THK SR15W Linear Guide with 50cm rail length: 2 * GT2 bearing Idle pulley: 4 * GT2 motor pulley stepper: 1 * Openbuild aluminum spacer: 4 * GT2 belt: 150cm * Smooth stainless steel rod: 50cm * Flexible Couple D19 L25: 2 * 2020 aluminum corner bracket: 8 * OpenBuilds CNC V-Slot POM Delrin V Wheel kit: 4 ELECTRONIC PARTS: * CREALITY ENDER 3 controler board: 1 * CREALITY ENDER 3 stock SMPS Power Supply: 1 * 4010 Fan (board cooler): 1 * Minebea 17PM-K402-P4V stepper motor: 2 * Makerbot compatible Limit Switch: 2 * 5500mW Laser Module: 1 * LM2596 buck converter for 12V Laser power supply: 1 * Wiring