Quote:
Originally Posted by Sieg
For optimum results on tubing isn't it advised to back-purge the tube with argon to reduce sugaring?
|
Yes -- on HEADERS etc.... but of course not if you're building a roll cage. So "it depends"....
On headers etc you want smooth flow which means keeping the inside of the tubes smooth. Sugaring also leads to cracking and corrosion. Purging also gives better penetration.