Sort:  
 3 years ago 

I meant "pencil".

 3 years ago 

Oh, I mostly use Staedtler Mars Lumograph pencils:

nt-cutter-utility-knife.jpg

Another option I like are the Faber-Castell 9000:

castell-9000.jpg

I do use others too.
You can see many types in my guide:

https://ranartblog.com/blogarticle18.html