Complete Beginner Tries MIG Welding for the First Time - Clarke 135TE 

Even an ugly weld can be ground down into a lovely finish ;) You might be blowing through because you're running it too hot (amps) but I'm not an expert on that matter! I think wire speed is more to match your movement and amps is for material thickness.

Just keep going it gets easier mate

I’m a welder by trade. The weld you said has more penetration is pretty good for your 5th go! Penetration only really matters when you’re welding different bits of steel together. You’ve picked it up a lot quicker than a lot of the apprentices that join my work haha. The first one has porosity because there was no gas and I wanted to note that depending on your guns shroud diameter you should alter the gas coming from the bottle using litres/pm but the bottle didn’t seem to use this measurement so I could suggest using a gas flow meter.

When welding the pipe together you want to butt weld it back together, you could try grinding one end of the pipe into a sort of bevelled shape for the weld to sit in and this will stop them looking like Mount Everest

cold welds maybe too much wire . also when you weld make sure to be comfertable and lean on something so your arms arent floating

I am planning to learn to weld and thinking of buying the same machine you bought. I will be very pleased if I start as well as you did. How are you finding the welder a year on?

Muchos amperes , baja la velocidad del alambre, no zigsagues(no hace falta para lo que estas haciendo), ve recto

If in doubt make what you need and get it welded somewhere , don’t want to worry about the strength of your welds