Welding porosity question

[Rick S.]

Doug,
You sure those gussets were laser cut?
I remember doing a bunch of those in 3/16 for you a while back.
The edge on the one in the pic sure looks like a 3/16 WJ.
Don't you normally do the laser spade gussets in 1/8?

[Punkur67]

Shouldnt be a water jet issue. I had every tab ans bracket on my car water jetted and did minimal clean up with no problem.

[Rick S.]

It's a fact that the garnet from waterjeting causes problems with welding.
Same with sandblasting. I'm not making this up. This is straight from our welding department at work. I've experienced this first hand also. I'm not saying that every uncleaned piece will cause problems, but some will.     

[Doug Heim]

Now that I think about it Im not sure. I still had some lasered ones left and they were all .188"

I had Adam (Grimm Reaper) cut me a batch on the water jet out of .125"

I do them all in .125 now.

Either Way I have never had a problem with water jet or lasered plate work. TIG may be different but personally the only porosity issues I have are with my nozzle being obstructed. Not completly blocked, just built up a bit with spatter.

[Icky]

I was thinking about this today and I forgot to mention the point about the water jetting as others have already mentioned, it can leave a thin film of sand on the cut edge......