Sep.30, 2013

As you may know, Josef Prusa, is among the most important contributors of Rep Rap project. Prusa Mendel, a simplification of Mendel is one of the most used RepRap variant. One of the recent creation from Josef is the Prusa Nozzle, a single piece stainless steel hot-end for a 3D printer.

Most of the hot end on the market include brass and PTFE (polytetrafluoroethylene) but a lot of them could not meet your needs for more demanding print jobs. Josef's Prusa nozzle is an all-steel version that allows you to print everything melting under 300°C - PLA, ABS, PolyCarbonate, Nylon. And if you upgrade the nozzle to use thermocouple there is no temperature limit.

Nozzle itself is made in one single piece from 303 stainless steel which is generally used in food industry. Inside is without cavities and polished, this makes nozzle extremely easy to clean. All cables use fiber glass insulation instead of Teflon, so you don't have to worry about poisonous fumes. That means now you can print things that should be considered food safe, like cups, bowls, and utensils.


  • Fully preassembled
  • Nozzle size: 0.4 mm & 0.6 mm
  • Groove mount (J-Head compatible)
  • DC FAN included
  • For 3mm filament
  • No PTFE or PEEK (can't be molten)
  • Filament in contact only with Food safe Stainless Steel (303 A1)
  • Using powerful heat cartridge
  • Ready to print ABS, PLA, PC, Nylon

Same as all Josef's printers in RepRap project, the Prusa Nozzle is also open source. You can download the drawing on Josef's site here.

Watch below some videos introducing Prusa Nozzle:

Prusa Nozzle printing Nylon 6:

Extremely easy cleaning of Prusa Nozzle at room temperature:

Joseph Prusa explaining his new extruder design on Maker Faire NY:


Posted in 3D Printer Accessories



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T wrote at 12/10/2013 2:27:12 PM:

The Pico is finally on Kickstarter!!!

T wrote at 10/1/2013 1:50:59 PM:

I agree it does like quite the E3D, I have been reading that it most likely has a smoother (due to the lapping) transition zone at the heat break which should be better when printing in extreme states, such as in a heated chamber. I am still waiting for the dang PICO hot end which I think has the most promise of them all based on the design. What ever happened to them??

sasan wrote at 10/1/2013 1:56:23 AM:

The new prusa heatsink looks allot like the E3d extruder, apparently the earlier model with small barrel was not enough to cool it down.

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