https://stream.echo6.co/videos/watch/6830aca0-d7c7-4910-9070-2bc5f3a19b7c https://weldmongerstore.com/blogs/weldingtipsandtricks Visit my store at https://weldmongerstore.com/collections/weldmonger-top-20-products for TIG cup Kits, TIG Fingers, Gloves, DVDs, and other quality welding tools. New products being added weekly. The macro etch test is a very valuable test to verify or check for penetration. It is especially valuable when developing a procedure or welding technique. Since it only tests one cross section, it is not always conclusive unless multiple cuts are done for a good sampling. Carbon Steel and Aluminum are relatively easy to etch but other more corrosion resistant alloys like stainless, nickel, titanium, and cobalt alloys require specific etchants and sometimes require an addition of electric current in order to etch. Wed, 15 Apr 2026 09:44:31 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/6830aca0-d7c7-4910-9070-2bc5f3a19b7c All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.