Yes, but the question is IF I do full penetration will it stick to the backer?

Just wanted to post a thanks for the thoughts. (and dive just a little deeper in the backer material kiddy pool) I did manage to find a little piece of alum angle and did a quick test weld on a little scrap of mystery stainless. The setup is a half-lap corner (a BS tech term that?!) ... meaning the ...

Interesting. That plus a small ball valve for the purge and I'm set. But is that hose even close to 2500psi rated? Or does it not matter? I've got a big spool of that stuff I think.

Thanks all! It's not structural and not anything other than an excuse to get my toe in the stainless waters just an itty bitty bit. No intention of being a food services stainless welding guru... way, way more advanced than I could or want to get! Much respect for those that do deep dive into such. ...

tungstendipper wrote:If you use steel for a backing block it is very likely you'll weld your work to the steel blocks.

Welcome to the forum.

Right... so if I champfer the corner of the backer so no contact at the puddle am I off to successville or??

Just getting around to attempting some stainless steel tig and have a truly fundamental question about backers. I've seen many of Jody's vid's discussing discoloration and using alum. or Harmful Freight's copper backers, but here's the thing.... I'm not (too) worried about backside discoloration (it...