How much gas do you think a 1"x1"x6" piece of tubing is going to "waste"? You're not wasting gas, you're protecting parts. Gas is cheap compared to oxidized stainless that rusts and fails.Timmy_Tiggs wrote: ↑Mon Oct 14, 2024 2:03 pm Is there a particular size of purge block that you've found handy? I figure a fairly small one could be just moved and clamped in position. A larger one might just waste gas.
I make blocks of all sizes when the need arises. There is no standard.