Ohio-based B3 Innovations is planning a Kickstarter campaign for its new hot end, the Pico.  A single part made of 303 stainless steel, its novel design required a machine shop capable of fulfilling aeronautical specifications.

The Pico's threads are tapered to prevent leakage, as is seen in the gas industry.  It can be run at an operating temperature of up to 300° Celsius, limited by the thermistor.  The upper half has a built-in heat sink, a span of cooling fins that increase surface area, dissipating heat into the surrounding air.  This helps prevent jamming by reducing temperature migration upwards.  Tests indicate that when printing at 260° Celsius the Pico’s top threads are less than 46° Celsius.

Key Features:

  • 3mm Filament Hot-End
  • 303 Stainless Steel 1-Piece Leak Prevention Structure
  • Single point M6x1.0 top mount
  • Interchangeable Brass Nozzle—Exterior Tapered M6 x1.0 (available in 0.4mm & 0.5mm outlet diameters)
  • Interchangeable 40-watt Cartridge Heater 6 x 23mm—release agent coated & 100cm heat-resistant leads (available in 12 & 24 volts)
  • Interchangeable 100K NTC Thermistor – 300°C Maximum—Pre-wired, crimped & soldered. Heat shrink & Teflon tube insulated leads
  • Eccentric 0.5mm thin Cooling Fins

Youtube video by onshoulders, taken at the Midwest RepRap Festival.