FLSUN S1 Pro

FLSUN S1 Pro – Industrially fast delta 3D printer for demanding users

FLSUN S1 Pro is the flagship of the FLSUN brand and is among the fastest desktop FDM 3D printers on the market. The delta construction, enclosed print chamber, and high-end drive allow for speeds up to 1200 mm/s and acceleration of 40,000 mm/s² without sacrificing surface quality.

The large cylindrical print space of Ø 320 × 430 mm offers plenty of room for tall parts, functional prototypes, design objects, and small-batch production. The high-temperature hotend up to 350 °C and heated bed up to 120 °C open the way to printing technical materials such as ABS, ASA, PA, PC, PETG, as well as composite filaments like PLA CF / PLA GF.

Key benefits of FLSUN S1 Pro

• Extreme print speed – up to 1200 mm/s Delta kinematics combined with closed-loop motor control and optimized FLSUN algorithms ensure very fast and precise printing. Ideal for print farms, services, and demanding hobby use.
• Large print volume Ø 320 × 430 mm The cylindrical workspace allows for printing tall models (statues, cosplay parts, functional machine parts) without needing to assemble the model from multiple pieces.
• High-temperature hotend up to 350 °C The 0.4 mm hardened steel nozzle handles even abrasive materials (carbon/glass fiber) while maintaining stable material flow at high speeds.
• Smart heated bed with Smart Zone Heating The bed with a textured PEI surface heats up to 120 °C and has two thermal zones – an inner circle for smaller models and an outer zone for large-volume printing. It saves energy and improves first-layer adhesion.
• Enclosed chamber with active heating The printer maintains a stable temperature in the chamber (approx. 50 °C), which significantly improves the printing of materials sensitive to drafts and temperature differences (ABS, ASA, technical materials).
• AI camera control and smart functions An integrated 1080p camera with AI algorithms monitors the printing process (detection of "spaghetti", failed prints, real-time monitoring, timelapse). The printer can be connected to the FLSUN World cloud ecosystem for remote supervision and management.
• Quiet and efficient operation Thanks to a redesigned cooling system, it reaches noise levels of approximately ≤55 dB, which is very pleasant for home and office environments.
• Integrated Filament Dry Box An actively heated and enclosed filament holder keeps the filament dry and improves the print quality of hygroscopic materials (PA, PETG, TPU, etc.).

Typical use

• 3D print farms and 3D printing services – high productivity, large volume, remote control, and monitoring.
• Prototyping and production of functional parts – technical materials, large and precise prints.
• Educational and university projects – demonstration of modern delta kinematics, AI print control, and high-speed FDM.
• Hobby enthusiasts and makers – fast printing of large models, cosplay, RC parts, design, and decorations.

Main features

• Delta FDM 3D printer with enclosed chamber
• Print volume: Ø 320 × 430 mm (cylindrical)
• Max. print speed: 1200 mm/s
• Max. acceleration: 40,000 mm/s²
• Max. nozzle temperature: 350 °C (hardened steel)
• Max. bed temperature: 120 °C, Smart Zone Heating
• Textured PEI bed for reliable adhesion
• Support for a wide range of materials: PLA, PETG, TPU, ABS, ASA, PA, PC, PET, PLA CF, PLA GF
• AI camera monitoring (1080p), print error detection
• Active Filament Dry Box, capability to store 1 kg spools inside
• Built-in air filtration (HEPA + active carbon)
• Large 7" color touchscreen display
• Modern network and cloud functions, remote control

Technical specifications

Why choose FLSUN S1 Pro

If you are looking for a 3D printer that can handle extreme speeds, large objects, and demanding technical materials, the FLSUN S1 Pro is an excellent choice. It combines industrial parameters, modern AI functions, and user-friendly control into one compact device, suitable for both professionals and advanced home users.

The FLSUN S1 Pro saves time in prototyping, increases the productivity of a print farm, and thanks to the enclosed chamber and Dry Box, provides stable results even with more challenging filaments.

Key features:

• Ultra-fast FDM 3D printer with delta kinematics and speeds up to 1200 mm/s
• Large cylindrical print volume Ø 320 × 430 mm for tall and large models
• Enclosed and heated print chamber for reliable printing of ABS, ASA, and technical materials
• High-temperature hotend 350 °C with hardened steel nozzle 0.4 mm for composite filaments
• Textured PEI bed and Smart Zone Heating up to 120 °C
• AI camera monitoring (1080p), print error detection, and remote supervision capability
• Integrated actively heated Filament Dry Box and HEPA + active carbon air filtration
• Large 7" touchscreen display and modern firmware with support for FLSUN Slicer V2.0