Originally Posted by Radar Chief
I picked up welding a few years ago when I bought a 120V Lincoln running flux core from my father-in-law. Luckily one of my best friends is a very experienced welder and he's been teaching me how to run it.
If I can lay my material flat and run a straight, level bead I can come up with some pretty good looking welds. Running a bead uphill or upside down is where I get into troubles.
Flux core is a different animal. It is useful if you learn its drawbacks. Here is a page on my website about it.
Long story short
- be sure you are runing it DCEN if it is gassless wire (electrode on negative)
- Use a long stickout (3/4 to 1 inch between end of contact tip and metal) this preheats the core
- You do not need the nozzle with gassless flux.
- use side to side (weaving) motion do NOT back up and weld over the slag
- voltage = weld width
- wire speed = penetration + filler
this is true on all wire welders