I'll show you how the hotend on a 3D printer works, which might seem much more complicated than it really is. Using a large 3D printed hotend model, I'll explain the correct way to install or change the nozzle.

* Printable models *
Olsson torque wrench:
https://www.youmagine.com/designs/noz...

More wrenches:
https://www.thingiverse.com/thing:261...

E3D hotend model and cutaway:
https://www.thingiverse.com/thing:276...

* Get in touch *
https://hobbyhoarder.net
  / hobbyhoarder  
  / hobbyhoarder  

* Support me *
If you'd like to show your appreciation, you can use my Amazon affiliate link whenever you're making a purchase. Nothing changes on your end; you pay exactly the same, but I get a small percentage from Amazon in return.

Amazon (US / Germany link): http://geni.us/qpPzEQh

* Ko-fi (for small donations) *
https://ko-fi.com/hobbyhoarder