On 1/4/2020 5:49 PM, Clare Snyder wrote:
On Sat, 4 Jan 2020 14:50:31 -0800 (PST),
wrote:

I have done this many times.first wash out tank with liwuid gunk degreaser.flush it good with water.but tank on bench.stick airhose in tank low preasure.leave tank sit 5 minutes.leave airhose in while welding.no stangent fumes no explosion.a old mortorcycle mechanic taught me that 50 years ago
filling it with co2 from a fire extinguisher works pretty good.
Argon or CO2 either one , if you happen to have welding shield gasses on
hand . Big plus is that it leaves the extinguisher usable for it's
intended purpose .

--
Snag
Yes , I'm old
and crochety - and armed .
Get outta my woods !