lowlyfe
+1y
The only tips I can give you is to pick up a bunch of scrap steel of various thickness and just practice over and over until you start to get nice looking welds with good penetration. Check them by cutting right through the welds to get a good visiual idea of how your doing. A good auto darkening helmet will deffinately help too since you can see exactly what your doing before you pull the trigger
Take your time, have a steady hand, be as comfortable as possible, remember to breathe and be relaxed. Always try to push the weld and not pull it, it's easiest to start doing beads by pulling the trigger and start a puddle then start doing eeeeee's over and over to get the dime stack look or >>>>> works good too. When doing vertical welds its best to start at the top and go down with a christmas tree pattern like these ^
A good, clean bare metal, tight ground is a must to get the machine to burn properly as well as grinding the area to be welded atleast an inch back. Setting the machine is probably one of the most important though, though it is easy to figure it out with the simple directions in the manual.
Im running .30 wire with pure CO2 gas and it does a good job for 1/4" as well as sheet metal.
Keep in mind that I've only been welding for a couple of years now and was self taught with my Hobart 140 and I have alot of room for improvement.
Also watch every Youtube video you can about mig welding... I picked up alot of great tips and tricks from those videos.
Practice doing all types of joints, keep the tip trimmed to roughly 1/4" out of the gun and keep the tip of the gun close to the weld. I usually have the gas set at about 18cfm. Always chamfer your edges when possible to get good pentration and did I mention, practice?
Any more questions feel free because I had to ask alot of them myself so Id like to pay it forward.