Not jealous at all that you have a 2200 and I don't
The welds look neat. It looks like you've sanded that prior to welding. No need. Unless there is some form of anodising on it. A wipe over if it's dusty or a drop of acetone if it's dirty at the most but other wise let the Fronius earn its keep and the ac wave will do all the cleaning you need. Again I'm really not jealous at all
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