Hi Baz,
Buy colbalt ones, but they are not cheap;
https://www.orbitalfasteners.co.uk/e...balt-bits-a777
Unfortunately the general public (ie. non trade who have no idea what proper engineering costs are) think that B+Q or Screwfix gold drills are actually what an engineering firm might use
Also look on the bay for used older sets, over the last few years I have acquired full sets of British made metric / imperial / letter and number drills, all for a fraction of their value by being patient. Well looked after or little used sets often pop up on there.
ATB, Ed
Good Egg
Do have a shop around though as that was a random link, and also invest in some Dormer Supercut ...I use the spray version more and more as it seems more economical, but have not used a drill ''dry'' on any metal in memory, I drill a lot of tough steels / Inco alloys / hard grades of stainless so am used to taking it easy and keeping the drill cool...On occasion I get the odd wally on my pillar drill at work (I keep the good drills locked up) who is staring at a burnt drill and hot piece of stainless sheet because he was using 1000 rpm and no cutting fluid and has wrecked the job in seconds by being impatient.
Some of the specific spray oils for magnetic drills (Rotabroach types) are also very good for positinal work as the y don't run, I use JEI endurance which sprays like silver body shultz but is great for when you have to drill with air tools horizontally or overhead etc. as no drips!
ATB, Ed
Can you get to Rufforth, near York, on the first Saturday in the month for the autojumble? There is a secondhand tool dealer there who really knows his stuff and will not have crap on his stall.
I'll take it a step further and say if you can get there for about 0800 I'll introduce you to him.
ATB, Mick
When guns are outlawed only outlaws will have guns .
Looks like the drill bit issue is sorted, so on to part 2.
When did you last have a bath ?
Rust never sleeps !
No need to bath - the smell of cutting fluid and diesel keeps the critters off me. The moral to the story is don't use Chinese emery paper, or if you must use it, never in hot weather.