Selling my upgraded Prusa i3 MK3S in a Bear-style 2040 aluminium frame (much more rigid than the stock Prusa laser-cut frame). A strong, well-tuned machine that’s been upgraded with quality parts and is ready to keep printing for years to come.

Upgrades & Features: * BigTreeTech SKR 1.4 board – powerful 32-bit controller for smoother performance * Marlin firmware upgrade – reliable, customisable, feature-rich * Moons stepper motors – high-quality, accurate, and quiet * Genuine Prusa PEI sheet – excellent adhesion and easy part removal * Igus bearings – smooth and long-lasting motion * Red Lizard K1 V6 copper hotend – high-temp capable, consistent extrusion

Specs: * Build volume: 250 × 210 × 210 mm * Layer resolution: 0.05–0.3 mm * Nozzle: 0.4 mm standard, up to 300 °C with the copper hotend * Heated bed: Up to 120 °C * Filament diameter: 1.75 mm

Why this printer? * Beginners: easy to use, great print quality, wide material support * Hobbyists/Pros: upgraded electronics, precision bearings, rigid frame – dialed in for reliable performance

Happy to demonstrate it printing and provide a sample part so you can see quality before buying.