Metal Shavinks in the Kompressor
The right amount of metal shavings in the kompressor is in proportion to the price, ignorance and quality control of the dog terd factory it was made in.
They don't carefully hand build things - with great attention to detail and do things like blowing swarf out of the threaded holes etc.. for kompressors that not infrequently get treated like crap, and are poorly serviced and run into the ground.
I mean like here in Straya, you can buy Chinese kompressors for $130 that are seemingly good and decent units (untill some use is put on them and the flaws start to become obvious) - complete with badly laid out couplings, stupid drains, crap sealing in the connecting pipes and poor oil control on the piston (scraper rings ??? what are they??) etc.....
I spose you could look at it as an investment, in that you got more for your money than you bargained for.
You got some extra metal in the unit for free - kind of like a fly in your soup.