With a bit of luck I should have my first lathe in a few weeks, a Super C3 Mini Lathe! I want a good set of 1 to 10mm jobber drills to use with it and I've been told it's worth looking at Dormer as they can drill so accurately you don't need reamers and they'll also last a lifetime. I've been looking at the huge range they have to offer and need some advice. The carbide drills look brilliant, but way too expensive! Dream on... Same for ADX drills sadly. So looking at the ready made Dormer sets of general purpose jobbers, the choices simplify to: A set with steps of 0.5mm or 0.1mm A100, or A002 HSS, or A777 HSCo types. These have various cutting head geometries I don't know how to compare. Whilst a 0.1mm stepped set sounds nice, I'm thinking that in practice I'll just be drilling whole number metric diameter holes or tapping size holes, so perhaps I should get just a 1,2,3,4,5,6,7,8,9,10mm set of a more expensive type and buy other individual drills as required. But maybe the A100 or A002 drills are already good enough to last a lifetime? Advice appreciated!
12 years ago