Recommended step drills?

[Agrismith]

Go from one side then flip over. Result!

Doesn't make a very nice hole though. And you are removing 100% of the material, whereas a hole saw produces a clean hole in thick material while only removing a tiny amount of material so quick and less energy

 

[8ob]

Not had any issues with Lidl/Aldi finest, that said they are only used on thin sheet material.If it’s 2mm or over the hole saws come out.

Bob