Flux-core holes start/stop

[Bikespot]

I'm running 0.35 innersheild wire. I'm getting small holes at the start/stop positions. The metal was clean. Not sure if its because i'm not starting back far enough or what. Or if the slag is causing a problem welding over it.

Part is in picture. The holes are really small i couldnt get close enough without being blurred. There is still some slag on the weld , not easy to get off.

I have no problems with flat position no stopping. Included picture.

[Bikespot]

No one can help?

[junes]

Material doesn't look that clean really. It might just be due to the weave. Try not to weave and see what happens.

[KHK]

I would love to help, but I have never MIG welded

[Bikespot]

Material doesn't look that clean really. It might just be due to the weave. Try not to weave and see what happens.

Thats possible , but i doubt it would have added to all that cause flux you can run more dirty than mig.

I'm wondering what is the procedure for flux for start/stops and weaving cause the slag gets into the weld.

[robert]

They say it will weld dirtier metal but the cleaner it is the better.

[junes]

The pipe or tube looks like galvanized that could be your problem. Did you clean the inside

[frijoli]

I've never been a fan of flux core, but it does beg the question of welding over deposited flux. I know you should not do it over a stick welded bead.

Clay

[junes]

Personally I absolutely hate it unless mobile in the middle of nowhere. I think the practice between passes is wire wheeling the bead or at least thats what I do.

[robert]

Ran out of gas over the weekend and i had to finish up with flux core and if your painting the part you have to clean all the flux off for the paint to stick.