Wanhao Duplicator 4S

If you're after a cost-effective, dual-extrusion capable printer and don't mind a bit of tinkering, the 4S is a solid choice!

In good condition, all functions are working.
Can help with Cura setup.
Can sell the Octopi print server (also in the picture) on Raspberry Pi 4 for additional 50 EUR. It is not necessary though, just more convenient.

Wanhao Duplicator 4S is a budget-friendly dual-extruder FDM printer, built on a rigid, enclosed chassis that minimizes vibration and improves print stability. With a heated bed and user-stored settings for ABS, PLA, and HIPS, it’s versatile for common filament types and ready for experimenting with tougher materials. The interior is well-lit, and material is fed via rear-mounted spools into guiding tubes. Calibration is manual—using paper under bed screws—which demands precision for top-tier print quality. Files can be loaded via SD or USB. While capable of strong performance—shown through quality prints like keychains, quadcopter parts, and a detailed T‑800 head—fine-tuning is essential, and post-processing may be needed. It’s best suited for hobbyists, students, and small businesses who want dual-material printing at a reasonable price point.