Background Information

The Prusa Pro HT90 is a high-speed, industrial-grade delta 3D printer designed for advanced engineering and demanding materials. It boasts a substantial build volume of Ø 300 × 400 mm (28 L), combining delta kinematics with ultra-fast specifications. These include travel speeds of up to 600 mm/s, print speeds of 250 mm/s, and acceleration of 20,000 mm/s². Klipper firmware, equipped with Input Shaper and Pressure Advance, enables these remarkable capabilities.

The printer features a fully enclosed chamber heated to 90 °C, supported by innovative airflow mechanisms such as a servo flap and a high-pressure turbine. Additionally, HEPA filtration ensures exceptional layer adhesion, minimal warping, and safe printing of a wide range of materials. These include standard PLA/PETG, ABS, ASA, and even engineering-grade polymers like PEEK, PEKK, PPSU, PSU, PES, and PEI (Ultem), all thanks to its 500 °C-capable hotend.

Two quick-swap Revo-compatible print heads are included, one with a high-flow version capable of printing up to 300 °C and another with a high-temp version capable of printing up to 500 °C. These print heads facilitate seamless transitions between rapid prototyping and high-performance filament printing.

Technical Specifications

Physical Dimensions

  • Width (Without Filament Holder): 530 mm (20.87 in)
  • Depth: 530 mm (20.87 in)
  • Height: 1050 mm (41.34 in) / 1470 mm w/ door open (57.87 in)

Printing Dimensions

  • Build Volume: Ø300 × 400 mm
  • Filament Diameter: 1.75 mm
  • Layer Height: 0.05 - 0.30 mm

Electronics

  • Mainboard: 32-bit Duet Control board
  • Software:
    • Klipper control system
    • Input Shaper
    • Presure Advance
  • Connectivity:
    • Ethernet (RJ45)
    • Detachable Wi-Fi Module
    • Offline Operation
  • Surveillance: Build-in integrated camera and Chamber Lighting

Extruder

  • Print Head Type: Direct-drive
  • Nozzle Type: Quick-Swap Revo Nozzles
  • Nozzle Diameter: 0.25 to 0.8 mm (custom slicer profile needed for some Revo nozzles)
  • Max Filament Flow: 40 mm3/s (ABS and 0.8 mm nozzle)
  • Max Speed: 600 mm/s
  • Max Print Speed: 250 mm/s
  • Acceleration: 20,000 mm/s2

Max Temps

  • Operating Temp Range: 20 °C - 32 °C
  • Maximal Air Humidity: 85 %, non-condensing
  • Max Bed Temp: 155 °C
  • Max Chamber Temp: up to 90 °C
  • Max Nozzle Temp: 300 °C - 500 °C

Cooling

  • Cooling System:
    • Servo-operated high-speed flap for immediate airflow changes
    • High-pressure turbine

Supported Materials

  • High Temp Print Head:
    • PEI (Ultem)
    • PEEK
    • PEKK
    • PPSU
    • PSU
    • PPS
    • PES
  • High Flow Print Head:
    • PLA
    • ASA
    • PETG
    • FLEX (TPU, TPE)
    • ABS
    • PA
    • PC
    • PCCF

Power

  • Power Supply: 110V 15A / 230V 10A 50/60Hz

Calibration

  • Calibration:
    • Always-perfect first layer w/ Loadcell sensor
    • Fully automatic calibration

Print Surface

  • Print Pads:
    • Textured PEI steel sheet
    • PA steel sheet optionally available

What's in the Box

  • Prusa PRO HT90 3D Printer
  • Power cable
  • Textured Powder-coated Print Sheet
  • Wi-Fi adapter
  • USB drive with sample print files
  • Prusament ASA Jet Black 850g
  • Alcohol-saturated wipes
  • Side cutters
  • High-flow print head
  • High-temperature print head
  • High-temperature nozzle exchange tool
  • 3D Printing Handbook
  • PTFE Lubricant
  • Spare parts
  • Filament holder
  • Brass nozzle brush

Additional Information