Are these shears any good?

[AshG]

waste of time those. they just bend the ali. i did all of mine with 1mm makita ali cutting discs on the angle grinder. they are £15 a pack of 10 at screwfix which seems expensive but is actually pretty cheep as they last for ages. i only used two discs to cut every ali pannel on the car. they go through it like butter and can give a super super straight cut. you can also get round mild corners with them if you are gentle and take your time

i would assume you already have an angle grinder so £15 is pretty cheep compared to £52 for the airsheers that just wrinkle the edge of the ali