Prusa MK4 Technical Review & Handbook – Спецификации и настройки

The Prusa MK4 represents a significant evolution in prosumer Fused Deposition Modeling (FDM) technology. Engineered by Prusa Research, this machine builds upon a legacy of reliable open-source kinematics while introducing advanced loadcell-based bed leveling and a 32-bit connected architecture. The Nextruder technology ensures precision extrusion with planetary gears.

Спецификации

• Производител: Prusa
• Технология: FDM
• Клас: prosumer

Чести проблеми и решения

Stringing

• Description: Thin, web-like plastic strings appearing between printed parts due to oozing during travel moves. Решение: Dry the filament for 4-6 hours (50°C for PLA, 70°C for Nylon), increase retraction distance by 1-2 mm, decrease nozzle temperature by 5°C, and increase travel speed to 200 mm/s.

Warping

• Description: Corners or edges of the print detach from the build plate and curl upwards due to uneven cooling and thermal shrinkage. Решение: Increase bed temperature by 5°C, use a 5-10 mm brim, apply an adhesive like a glue stick on the PEI sheet, and reduce part cooling fan speed to 30% for the first 5 layers.

Elephant’s foot

• Description: The first layer of the print expands horizontally beyond the intended CAD dimensions because it is squished too hard against the heated bed. Решение: Raise the live Z-offset by +0.05 mm, decrease the bed temperature by 5°C specifically for the first layer, and apply a software Elephant foot compensation of 0.1-0.2 mm in PrusaSlicer.

Layer shift

• Description: The upper layers of the print are suddenly shifted horizontally relative to the lower layers due to kinematic issues. Решение: Tighten the X/Y drive belts, reduce print speed by 20%, and check the grub screws on the stepper motor pulleys.

Подходящи приложения

• Rapid Prototyping: * Description: Quickly producing physical models to verify form, fit, and ergonomics within hours.
• Jigs and Fixtures: * Description: Creating custom manufacturing tools, templates, and fixtures capable of withstanding mechanical loads using tough materials like PC Blend, PETG, or CF-Nylon.
• Low-volume Production: * Description: Manufacturing small batches (1-100 units) of custom functional parts or spare parts without the need for expensive injection molds.