Nozzle completely stripped, now what?

[rwlroc]

The flimsy wrench that comes with the A20M bent trying to loosen the nozzle. I used a craftsman wrench. The brass stripped. Tried vice grips. Is the next resort a new heater block? Thoughts. It is not coming out.

MVIMG_20191116_173731.jpg (317.58 KiB) Viewed 5209 times

[rwlroc]

Well, using a hardened steel allen wrench, the screw holding the heating block on stripped too. The factory overtightens and as a result I need a whole new head just trying to change a freaken nozzle.

[DzzD]

You must heat the nozzle (190° approx) to be sure that plastic dont block it.

Trying to unscrew a cold nozzle can result in a crushed nozzle.

[Jarda3d]

Bras tip need to be removed hot, not cold.

Use this tool after extruder is heated

https://www.carid.com/images/knipex/gar ... 0118us.jpg

[William]

Hi, for nozzle replacement,
you can try heating it up https://www.youtube.com/watch?v=aKp_QzApoEM and then unscrew it with a tool.
You can refer to the video for specific operations: