Prusa Pro HT90 - 3D printer

3D printer Prusa Pro HT90 (EU 230V) – delta kinematics, 90°C working chamber, and 500°C nozzle

Prusa Pro HT90 is an industrial 3D printer (FFF/FDM) with delta kinematics and cylindrical print volume Ø300 × 400 mm (28 L). It is designed for teams that want more predictable 3D printing of engineering plastics – from ABS/ASA and PA to high-end polymers like PEEK/PEKK and PEI (Ultem) – without sacrificing speed, repeatability, and control over the working environment. Its two strengths are actively heated working chamber up to 90°C and interchangeable print heads (High-Flow up to 300°C and High-Temp up to 500°C), which are included in the package.

• Print volume: Ø300 × 400 mm (cylinder), 28 L
• Temperatures: nozzle 300°C (High-Flow) / 500°C (High-Temp), plate up to 155°C, chamber up to 90°C
• Speed/dynamics: up to 600 mm/s movement, up to 250 mm/s printing speed, acceleration up to 20,000 mm/s²
• Filtration: HEPA + carbon filter in a closed recirculation loop
• Control and connectivity: 7″ touch display, Ethernet (RJ45), detachable Wi-Fi module, full offline mode

Key advantages for industrial 3D printing

HT90 is focused on achieving results "on the first try" with difficult materials and details with complex geometry. The practical advantages for professional work are:

• Heated working chamber up to 90°C for better adhesion between layers and less deformation with ABS/ASA/PA.
• Interchangeable heads – you can switch from a fast prototype (High-Flow, 0.4 mm Revo) to high-temperature materials (High-Temp, 0.6 mm Revo) without complex hardware reconfigurations.
• Closed filtration (HEPA + carbon), which maintains a cleaner environment in the chamber and supports operation in controlled spaces (always according to internal rules and OHS requirements).
• Offline mode for organizations with strict security policies – the printer is designed to operate without the internet, with the Wi-Fi module being detachable if needed.

Technology and quality: delta kinematics, temperature control, and airflow

Unlike classic Cartesian and CoreXY designs, delta kinematics moves a lightweight head with three coordinated arms while the detail remains stationary on the plate. This helps achieve smoother surfaces and stable dynamics even with larger details, especially when combined with Input Shaper (active vibration suppression).

Air control is also key: HT90 uses a servo-controlled high-speed valve that redirects airflow within milliseconds, plus a high-pressure turbine to cool the chamber after a cycle. This allows for cleaner overhangs with fewer supports, without the rest of the detail being "overcooled." Additionally, there is automatic control of incoming air for materials like PLA/PETG, so they can also be used in a closed chamber according to the profile.

Performance and workflow

HT90 is designed for two typical operating modes:

• Ultra-fast prototyping with High-Flow head – optimized for materials up to 300°C and high performance (specifications indicate up to 40 mm³/s maximum flow rate with ABS using a 0.8 mm nozzle).
• High-temperature 3D printing with High-Temp head – up to 500°C for materials in the PEI/PEEK/PEKK class and others (suitable mainly for small to medium details, where thermal control is easier).

According to the manufacturer, with suitable settings and material, HT90 can deposit up to 1 kg of PETG or ABS in ~8 hours, which is useful for rapid iterations and short runs. Management is through a large 7″ touch display, and automatic calibration relies on Loadcell for the first layer – the system measures the distance in a grid and calculates corrections without manual adjustments.

Compatibility and ecosystem

The software center is PrusaSlicer (professionally oriented, with ready profiles). For modeling and preparation, you can work with your preferred CAD/3D software and import standard formats like 3MF, STL, STEP, OBJ, and AMF into PrusaSlicer, then export G-code for printing.

There are two main scenarios for network operation:

• PrusaLink – local management within your LAN environment.
• Prusa Connect – cloud management and monitoring when your policies allow it.

HT90 supports Ethernet (RJ45) and removable Wi-Fi module, as well as full offline use (including firmware update via USB). This is a strong advantage for manufacturing and engineering organizations where data and access are strictly managed.

Design and ergonomics

The printer has a compact base relative to its volume and a vertically sliding door that saves space in front – important when positioning against a wall or in a lab row. The dimensions are 530 × 530 × 1050 mm (without roll holder), and the height reaches 1470 mm with the door open. The weight is 43.5 kg without packaging (50 kg with packaging), which is realistic for an industrial-class system and requires planning for transport and placement.

Operating conditions: the device is intended for indoor use, at 20–32°C and up to 85% relative humidity (non-condensing). For the EU variant, the power supply is in the range of 220–240 VAC, 50–60 Hz (according to documentation, depending on the variant).

What the basic package includes: the printer itself, power cable, textured powder-coated print sheet, Wi-Fi adapter, USB flash drive with sample files, Prusament ASA Jet Black 850 g, alcohol wipes, cutters, High-Flow head, High-Temp head, tool for changing high-temperature nozzle, PTFE lubricant, spare parts, roll holder, and brass nozzle brush.

Professional scenarios

• Large ABS/ASA housings and covers: the heated chamber up to 90°C helps maintain stable geometry and reduces the risk of warping on larger surfaces.
• Grips, conduits, and jigs for production: rapid iteration with High-Flow head and the ability for more sustainable materials (PC, PA, composites like PCCF) when hardness is required.
• High-durability proof-of-concept details: PA/PC/PACF/PCCF for functional prototypes that need to withstand load and temperature.
• High-temperature components (small/medium): PEI/PEEK/PEKK/PPSU for parts in engineering applications where standard materials are thermally or chemically transferred.
• Flexible elements: TPU/TPE for seals, pads, protectors, and grips, with the extruder optimized for FLEX.
• Secure environments (offline): laboratories and enterprises that require local control and limiting external connections.

Limitations and best practices

• Moisture is enemy No. 1 for engineering materials: many high-grade filaments are hygroscopic. Plan for drying and operation from a drybox/dehydrator to reduce stringing and micro-defects.
• PEEK/PEI are sensitive to thermal conditions: a 90°C chamber is very useful, but for larger parts, additional tests, gentle speeds, and careful orientation may be required.
• Printing surface and adhesion: clean the sheet (alcohol wipes are included), use appropriate temperatures and "brim" for parts with a large contact area.
• Filtration and safety: despite HEPA+carbon, follow your internal OHS rules, avoid touching hot areas, and ensure a controlled environment for materials with emissions.
• Maintenance: follow the cleaning/filter replacement and lubrication schedule (linear guides, etc.) to maintain dynamics and repeatability over time.

Technical specifications