Hi Tom. If there is a specific size that you cannot obtain, you can cut larger items down to size, then just sand the edges.
Alternatively you can coat aluminium of the required size with sublimation fluid. Leave it for 24 hours to thoroughly dry and it will be ready for your transfer.
Alternatively you can coat aluminium of the required size with sublimation fluid. Leave it for 24 hours to thoroughly dry and it will be ready for your transfer.