I have a nice sheet aly I bought for my project. It is 2.5~mm chequer plate that needs to be cut into 7 pieces (straight across the sheet, no curves needed), and I tried to cut it with a metal blade in a jigsaw - I only got ¾ of the way through cutting the first piece (2nd photo)
The problem is the blade became blunted, either due to aluminium wearing it out, or the aluminium melting and blocking it. This probably due to the speed on the jigsaw being set too high, so would it be possible to cut the aluminium using a jigsaw, and if so what would be the best way to go about it? I know about cutting wood and plastic with a jigsaw, I am not experienced at all with cutting metal.