question chain cleaning

[stoveliker]

As you can interpret correctly from the title, my chainsaw maintenance skills are still in development.

I finally got some time for saw maintenance - after I had a friend use my saw. (Lesson learned about that...)
I sharpened my chain. (Somehow that I can do quite well, based on the chips it throws after I sharpen.)

I found a lot of fines and some chips had clogged the oil hole in the bar. As a result the bar had gotten hot (bluish edge in places).

When I took the chain came off to clean the bar, I found it had burrs on the side, not surprisingly.

So, I filed those off, gently, and I dressed the bar (using a square block pressed against the side of the bar and with the file pressed on the top, so as to have it 90 degrees to the bar).
That seemed to have worked fine. (did not use the saw yet after this).

As I had learned that cleaning the chain from the filings is a good idea (duh, but one gotta learn things at some point), I used kerosene and a brush in a shallow tray that came from a chemistry lab.
While that did get a lot of crap off, a lot of fines still stick to the chain near the cutting pieces. See pics.
I can use a fine screw driver or pick to scratch that off, but that would take a lot of time. The kerosene and plastic brush did not take it off.

- Is bad for chain life or sawing performance to leave these fines on there?
- If it's better to get this off, how do you do that? In particular after sharpening the chain (so no metal brush...)

thanks