The BSA A7-A10 Forum

Bikes, Pictures, Stories & more => Chat, Offtopic, Meetings & Everything Else => Topic started by: Greybeard on 26.10. 2018 17:38

Title: Best drill bits to buy?
Post by: Greybeard on 26.10. 2018 17:38
I would like to hear your recommendations for best quality engineers drill bits, please. HSS, Cobalt, Titanium? None of these? https://www.toolstation.com/shop/p75149?r=emarsys
Title: Re: Best drill bits to buy?
Post by: RoyC on 26.10. 2018 17:45
I would like to hear your recommendations for best quality engineers drill bits, please. HSS, Cobalt, Titanium? None of these? https://www.toolstation.com/shop/p75149?r=emarsys

I buy Cobalt, as you can drill stainless with them.
Title: Re: Best drill bits to buy?
Post by: Swarfcut on 26.10. 2018 18:22
  My favourite these days is a new cheap Toolstation  HSS steel drill bit for pilot holes in mild steel, where a good sharp drill can be the difference between perfection and off centre failure, especially when removing broken studs. The drills are a little brittle, but cheap enough to be disposable. They come in packs of 10. Once I have a good pilot hole, then like RoyC, I move over to a  set of Cobalt, which keep their edge for a good time even if they get a bit hot. Recommended you use some sort of lubricant with them to maintain their life. I am a great believer is using each driil in the set as you enlarge the hole, gives them all a bit of use and though it may take longer, puts less strain on your cordless drill battery.

 In the good old days it was the best plan to go for HSS,  Dormer and INTAL  were my preferred  brands.  We had all made the mistake of buying  big sets of soft carbon steel, breaking the smaller sizes in minutes. Then we wised up.  HSS by DeWalt, B&D and Heller would be the modern day equivalents.

  At the Homebuilding Show at the NEC , Birmingham,  UK   I saw a guy demonstrate some amazing drill anything bits.  With a cordless drill he  he sailed through steel, cast, stainless, brick, concrete, stone all with the same drill bit  Fantastic, but as the set included some sizes you use for shipbuilding, I passed on them.

  Swarfcut
Title: Re: Best drill bits to buy?
Post by: Greybeard on 26.10. 2018 18:51
Great advice guys, as usual. Thanks.
Title: Re: Best drill bits to buy?
Post by: Greybeard on 26.10. 2018 18:55
My favourite these days is a new cheap Toolstation carbon steel drill bit for pilot holes in mild steel, where a good sharp drill can be the difference between perfection and off centre failure, especially when removing broken studs. The drills are  brittle, but cheap enough to be disposable. They come in packs of 10.
These? https://www.toolstation.com/shop/p21963
Title: Re: Best drill bits to buy?
Post by: a10gf on 26.10. 2018 19:01
https://www.dewalt.com/products/accessories/metal-and-wood-drill-bits/metal-drill-bits/14-pc-pilot-point-titanium-drill-bit-set/dw1354

These with the extra center 'pilot' are excellent.
Title: Re: Best drill bits to buy?
Post by: Greybeard on 26.10. 2018 21:40
https://www.dewalt.com/products/accessories/metal-and-wood-drill-bits/metal-drill-bits/14-pc-pilot-point-titanium-drill-bit-set/dw1354

These with the extra center 'pilot' are excellent.
They do not appear to be available in the UK!
Title: Re: Best drill bits to buy?
Post by: Daithi on 26.10. 2018 21:59
These guys do great quality products..
  https://eshop.wurth.co.uk/en/GB/GBP (https://eshop.wurth.co.uk/en/GB/GBP)
Have been using their bits for years and well happy with em.
 
Title: Re: Best drill bits to buy?
Post by: morris on 26.10. 2018 22:09
Guhring 205 (HSS) or 305 (Cobalt) series
Didn't come across better yet.
Available on e-bay
Downloadable catalogue on http://guhring.com/Catalog