I saw an advert for that in a Tractor Mag and also thought it look very interesting. Especially for bigish stuff like LR Chassis where the spec of a MIG you would need would be quite expensive. The Oxy kit is no cheap but obviously has other uses. Id like to know if anyone has used one as my only concern with this is its one of those "why hasn't that been invested before" things so you start to wonder if its not been around for a good reason?