[Furry prints ... how to get rid of the hair ...]

On 6/3/2019 at 11:28 AM, gr5 said:

We call this kind of "fir" stringing.  stringing is a little bit of nozzle leakage in a straight line between two points that the nozzle moves between.

 

"hair" is usually a strange phenomenon similar to cotton candy where extra thin hairs come out of "nowhere" and get blown around and find their way everywhere with no discernable pattern.

 

Anyway, thanks for this post, it confirms some things I knew - basically internal geometry of the nozzle is important.  More expensive brass nozzles usually string less - usually they have a more gradual slope going from 4mm or 2mm I.D. down to the typical 0.4mm I.D.  The length of the final channel is important also.  If it's too short then the nozzle leaks more.

 

3dsolex.com "race" nozzles seem to string not-at-all as far as I can tell - even the 0.8mm nozzles because of their complicated internal geometry.  disclaimer: I sell 3dsolex products in USA at my store: thegr5store.com so I am biased.

I have just started to suffer from "Fir" after switching to a Micro Swiss hotend with the "high quality" nozzle that it came with.

oddly enough the cheap nozzles I had used before almost never had this problem, to the extent I did not even know it was a thing other than normal stringing.

but good to see your guys inputs here has given me great insight, I started to suspect it was the nozzle but was hesitant to try since its brand new and had no reason to preform badly.