Homebrew PCBs

Hi,

How are people removing flux?

I'm using 98+% IPA and still have greasy residue left.  I've started 
using compressed air after scrubbing with IPA and an acid brush and 
am getting better results, but still a little residue left.

I've tried commercial flux removers.  In addition to making a bigger 
mess, they sometimes leave a white residue on the solder.

Rubbing alcohol (70% IPA) gives horrible results.  It doesn't 
evaporate fast enough and it ends up just moving the flux around...

My initial source of compressed air was one of those cans used for 
cleaning keyboards and the like.  That was looking to be an 
expensive consumable, so I started using a 10 gallon tank I use to 
inflate tires.  Lasts quite awhile and refillable, but it takes up a 
lot of space near my bench.  Maybe I'll try one of those refillable 
aerosol cans from Harbor Freight...

Regards,
Dennis