Try fire extinguisher repair/refill places. As a last resort, because they
may have problems filling it completely, try a beer party store that sells
kegs. They may fill CO2.

Bob
"jau" wrote in message
om...
ok, i've called up a half dozen welding shops in san francisco and
none of them can refill a co2 tank. can anyone recommend a place that
can? anywhere around sunset, richmond, or daly city would be ideal,
but not limited to these areas.

this has become quite a challenge as i usually get my refills in san
jose before i moved back to the city. much thanks in advance.