What width steel do you recommend 1mm.. 1.5mm ??
1.5mm would be slightly less likely to blow holes in. You'll get a feel for it, just tack, move to opposite side tack. Keep the amp's high enough to get decent penetration and wire feed reasonably high (5-6) on my welder for tacking. As I say you get it as you experiment.
Top tip, wear gloves, boiler suit/decent boots (not trainers like I did). Weld splatter is hot.
Thus avoiding the sweet smell of cooking your own flesh.
