Hi all, I've never welded before and I've 97 Mitsubishi FTO I'm trying to save. It's really rusted quite bad with a few signs of rot here and there I am thinking of getting GYS SmartMIG 142 I have about 500 I'm looking to spend for something new or used. Giving that I don't know what I'm really getting myself into I thought I'd show you what I have ahead of me. I was thinking that for the structural work I might get a pro to do it and then the lighter bits I would do. For example this welder says it does up to 4mm max so I assume it wouldn't but up to scratch to do the chassis rails as I assume the 4mm is the absolute max it could do so mightn't be up to this job. But if I was to tackle welding door sills would it do or do I need to get something with more power? Another question is with 40a and this much corrosion am I going to just blow through the sheet even if I get to half decent metal or I is 40a okay? For you experienced folks the pics of the chassis wheel arch corrosion how do you go about fixing this? It's all been treated now but do you just plate over it or what? Thanks in advance and Im so happy to have found such a great resource. Sill & cross member rust & rot corrosion on the chasis wheel arch corrosion on the chasis wheel arch Floor rot through right through to the driver footwell, floor / door sill rot/rust It's not rusted if it's just not there anymore Rear chassis rail rot.