Hi Recently retired and i've always wanted to finish a project of making a working model steam engine that i started with our teacher at school in metalwork. Now seems the right time. I served my apprenticeship as a tuner, back in the late '70's at Crabtree Vickers, but it's been many a moon since i used a lathe, so I've a bought a little ZELUS 7 x 14Inch Mini Lathe to start off with. First though, i think i need to get my eye back in and make a few basic things. Looking through some threads has given me some ideas ,so i'm looking at buying some material "stock". Anyway my laboured question is what sizes (round bar, flat bar, sheet), material (steel, brass, aluminium) etc would make a good store of stock for model engineering