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My first 'home made' Reprap hotend/nozzle

This one was made by myself, my very first 'home made' hotend for my Prusa Air 2 3D printer, 0.4 mm nozzle, 2 x 6r8 resistors, 3mm filament. Made of brass and ptfe.

Pic.1 just another reprap hotend...

The one from Pic.1 was based on my first hotend I got on ebay, which started to leak ABS after few days of printing (Pic. 2). Yeap, this black 'thing' is a melted ABS.. My version worked quite well but I didn't have time to fully test it.
I can only say that PTFE is not great for higher temperatures, probably it would last longer if used with PLA:175-180 degrees but it gets too soft at 230..

Pic.2 Leaking PTFE hotend


  1. Same problem with another hotend purchased in ebay, also with ptfe. Im also working in a new hotend fully made in aluminium, if it works I upload the diagrams.


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