I was welding on a new muffler last night, and getting really ugly beads. I had good penatration, but lots of splatter and the welds look more like boogers than beads. I did a search but didn't find anything.

How do I set the wire speed and the voltage.
I was using flux core, 110v mig.

You should have two knobs, one with low numbers that set the power and the other with big numbers that sets the wire speed...to weld mufflers I use 2/25....

Matt

Set the heat at the suggested setting for the thickness metal you're welding and set the wire speed to the suggested as well. Then turn the wire speed down till it sounds like bacon frying in a pan. If it looks like birdshit its just stacking up on the surface and not penetrating or you're moving way too fast. Kinda hard to tell ya without seeing it

You will get lots of splatter with flux core wire compared to using shielded gas.

Are your metal surfaces clean?

Is the polarity right on the machine ?

- jack

broad strokes, slow wire speed, just hot enough not to burn through...

-Jack

The first problem I had with my lil' 110V Mig welder was not plugging it straight into a 20 Amp socket - I used an extension cord and got crap welds...

Next I needed to turn up the power and slow down the wire speed from what "I" thought was right.

Then I realized I needed to be cleaning the surfaces way better - with only 100 Amps +/- you need to have good clean surfaces to get good penetration.

Finally - practice, practice, practice... I had taken a welding course a few years back and it still took a while to get the hang of the mig welded once I started using it.

im no expert welder, but on most 110 mig's ive used, i crank the heat all the way up and only turn it down if i start to blow thru. then i just fine tune speed based on what is being welded..