As mentioned above you can get an on-demand compressor with a 3L air tank for less than £100 now, I'd imagine after procuring a tank, the necessary fittings and valves you wouldn't be far off the cost of a new one.
Alclad is completely useless for brushing, it might give the best sprayed finish but it is no good for brushing.
To answer the OP's question in my experience the best silver paint for brushing is Citadel mithril silver.
Thanks chaps - I dismantled the check valve between the motor and the tank - couldn't see anything obvious at fault but on re-assembly it seems to be ok again , if the problem re-occurs I'll get a valve off the Bay
cheers again chaps
John
bottom
1 year to the day almost (last years birthday present) and its gone faulty
Instead of shutting off at the desired psi, air rushes out of the arrowed valve at an almighty rate until the motor starts up again
Any compressor guru's know what the problem is?