Yeah I might update that with a little more info. Essentially it's just a matter of ringing round all the offset printing companies in your area til you find o

Yeah I might update that with a little more info. Essentially it's just a matter of ringing round all the offset printing companies in your area til you find one that will sell you their used plates. I've only so far not managed to find them in the deep Australian outback, and the high Himalayas. Otherwise tho any ~0.3mm aluminium sheet will do. Weight and oxidisation are certainly issues, but mostly it's that the alu is easy to bend and cut by hand, and is more than strong enough to withstand high winds.