I've got it in mind to give it a shot in a few years time - I trained as a blacksmith and found sheet metalwork to be both fun and something I'm fairly good at. I'll be knocking up a set for my 550/k3 first if I do, pictures will follow and I'll see how much of a **** that job is before even considering the 500/4 type, none of it's going to happen soon though, at the moment I'm living in a house with a tarp where the slates should be. Also like Tomb I've done engineering type jobs that have taken days for friends or work collueuges, and financially it's never been worth it, conversely by doing the roof ourselfs we've saved paying a builder and his lad £30 per hour, against the £7.80 / hr I earn. I recon before I get round to it someone in China with a redundant production line thanks to the recession will churn out a mass of repro tinwork, if it only sells if a good copy then that will bew what is made, if it sells well despite being utter rubbish then that will be what is made. Quality costs.