Hit 50 weld coupons in a single shift and it finally clicked why speed matters

I've been a boilermaker for about 6 years now, and last Thursday on a job in Tacoma I burned through 50 weld coupons in one 8-hour shift. That's way more than my usual 25-30. It wasn't a rush job either, just repetitive vertical up stuff on a tank project. What surprised me was how much cleaner my beads got as I picked up the pace. I always thought fast meant sloppy, but that day showed me the opposite. Has anyone else noticed their quality actually improves when you push your speed a bit?

3 comments

3 Comments

rowanharris25d ago

I used to be in the same boat as the original poster, thinking slow and steady was the only way to a clean bead. But a few years back on a pressure vessel job, I had to crank out a bunch of stringers and realized my best work came when I pushed it. That whole thing about heat soaking really clicked for me - going slow just let the metal get too hot and the puddle would get all wobbly and I'd end up chasing it. Now I tell the younger guys that hesitation is usually what makes you chase your tail. That caterpillar with a full belly comparison you made is too real, I've laid plenty of those myself when I was second guessing every pass.

william_torres1mo ago

I mean, that actually makes a lot of sense if you think about the heat. When you go slow, you're basically soaking the metal way longer and it can warp or cause slag inclusion. Pushing the speed forces you to keep the arc tight and the puddle moving instead of letting it sit. I've seen guys who weld slow end up with way more porosity because they're giving impurities time to settle. Plus the muscle memory kicks in harder when you're not overthinking each pass. Maybe it's just me but I bet a lot of the bad habits come from having too much time to hesitate.

the_stella1mo agoTop Commenter

Alright, so am I the only one who's ever melted through a piece of metal just because they were trying to go "fast" and the puddle got away from them? Because I've definitely left some pretty impressive holes in my welding table that way. For me, it's less about good habits and more about just trying not to set anything on fire in a hurry. I guess if you've got the muscle memory down, speed keeps you honest, but my muscle memory is mostly just "panic and squirt more filler wire." So then I end up with a lumpy bead that looks like a caterpillar that ate too much, but at least it's not porous, right?