Be gentle on me. First post here. Over on rec.crafts.metalworking I asked about a device to mix gas from my argon and CO2 bottles for MIG welding. I got two suggestions, one was go to Ernie L's web site - should be there. It may be, Ernie only has about 10,000 links. I couldn't find anything.
Second suggestion was ask on this NG. Apparently you can build your own gas mixer with not too much difficulty.