I rarely use the hot water wand but did so this morning and saw some particles in the cup. Unscrewed the end filter bit and saw this 

Feels like soft metal flakes. I took the cover off the machine saw that the pipe to the hot water just comes straight from the steam boiler - so bit worried where this might've come from/what it is? Any ideas?
I got this machine 2nd hand only a couple of months ago, I plan to get it serviced soon anyway (I don't know the service history at all).

Feels like soft metal flakes. I took the cover off the machine saw that the pipe to the hot water just comes straight from the steam boiler - so bit worried where this might've come from/what it is? Any ideas?
I got this machine 2nd hand only a couple of months ago, I plan to get it serviced soon anyway (I don't know the service history at all).
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