Some strange stuff on the extruder

[morenoa0922 0]

Hello --

I have two Ultimakers. an Extended one which I later converted to "+" and an Ultimaker+. I noticed today, that the one I bought later has something on the extruder that the one I converter doesn't.

Can someone tell me if that is normal?

[IRobertI 521]

It's just some copper grease, normal and nothing to worry about.

[morenoa0922 0]

Thanks!