laura211•15d agoProlific Poster

Rant: I used to grind flush every single weld, now I leave most of them alone

For YEARS I thought every weld had to be ground down flat like a mirror finish. Then I worked with a 25 year veteran on a beam repair downtown last August and he just looked at me and said 'you're wasting time and metal, that cap weld is fine.' He showed me how a proper weld bead is actually stronger than a ground one for structural loads. Now I only grind when the engineer specs it or for clearance issues. Has anyone else had that moment where an old timer made you realize you were overcomplicating things?

2 comments

2 Comments

jason11215d ago

Had a similar wakeup call on a bridge job in 2019. Old foreman watched me spend 20 minutes grinding a fillet weld that was already passing bend tests. He pulled me aside and said "that weld is holding up a 40 ton girder, not a trophy." Now I only hit welds with a wire wheel for inspection access, maybe touch a high spot if it's in a slip critical connection. Saves me hours a week and my welds actually hold better since I'm not thinning out the parent metal.

abbyr9614d ago

Gotta push back on this one, man. That "it's not a trophy" line gets thrown around way too much and it's honestly just an excuse for sloppy work. A clean weld isn't just about looks, it makes inspection way easier for the guys who come after you. If you leave a bunch of spatter and undercut nobody can tell what's actually going on with the root pass. I've seen too many jobs where someone "just hit it with a wire wheel" and then a year later cracks show up because nobody caught the lack of fusion underneath all that crusty slag. Plus, if you're consistently making welds that need grinding to clean up, maybe the issue isn't the grinding but the settings or technique you're using to begin with. There's a middle ground between a mirror finish and leaving it looking like a bird crapped on a stick.