Budget-CNC Mill

thingiverse

Build your own CNC with as much value for money as possible. Status: BETA - Use with care! The "prototype" is running for about 1000h till now. Z-Axis-Ball-bearing failed and needed replacement at ~400h (50ct) Belt needed to be replaced at ~ 700h (~15€) Added fans to run motors at full current (~10€) Ballbearings needed readjustement at ~400h Scales up to 2m by 2m! (depending on size of choosen rails) I'm using 120x100cm rails(Y/X). More than 120cm per rail might need some reinforcements! Uses NEMA23 Steppers @ 36V Working Speed: up to 4000mm/min Moving Speed: 6000mm/min Spindle: Kress 1050 FME Capable of dealing with Aluminum - Prescision ~0.07mm (0.2mm cutting depth // 0.1mm sideways) BOM: Rails from http://www.cnc-discount.de // can be sourced from aliexpress as well Stepper: 3x Nema23, 3A Powersupply: 36V / 350W Stepper Driver: DM542+ (Note: Stepper, Driver, Powersupply as kit: ~ 190€) Old PC with LinuxCNC (Dell Optiplex 745. got mine from lapstore.de ~40€) Ballbearings: 608zz GT2-Timing Belt with steel core (aliexpress) Tons of screws& Nuts - M8, different sizes (buy online. got mine from schraubenking.at) Z-Axis: Build one yourself (requires CNC and experience. Template included in the plans) OR get a premade one from here (ebay: "cnc z-achse" seller: flohmarkt4u) Cables (Stepper, Endswitches) Endswitches (3x) GT2-Pulleys - get the ones for Nema23 Steppers (6.35mm center-hole) Wood: 24mm / 20mm Plywood / Multiplex Based on the work of others, e.g. Parametric Coupler By David Bunch - http://www.thingiverse.com/thing:724999