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best drill bits - procta - 27-02-2015
what is the best drill bits you lads use for drilling out studs etc?
RE: best drill bits - r3k1355 - 27-02-2015
Cobalt bits, they go through anything.
RE: best drill bits - bigcheez2k3 - 27-02-2015
I think I used a Heller one when drilling the holes for my vice on the workbench. 13mm drill bit needing to go through 3mm steel plate which it did fine then about 5" of wood underneath.
Machine Mart sell them, came in a green packet.
RE: best drill bits - procta - 27-02-2015
we have had a fare few drill bits from machine mart and they just either snap or go blunt,
but not sure what make they were,
I will keep the make in mind bigcheez2k3 as it does ring a bell mind.
r3k1555 I will have a look at Cobalt bits, as my dad did have something that went thought a bolt with out a bother.
RE: best drill bits - bigcheez2k3 - 27-02-2015
I can't vouch for the longevity of it as it was only 2 holes but we kept it lubricated (giggity) with WD40 as you should when doing anything like that.
RE: best drill bits - procta - 27-02-2015
(27-02-2015, 02:39 PM)bigcheez2k3 Wrote: I can't vouch for the longevity of it as it was only 2 holes but we kept it lubricated (giggity) with WD40 as you should when doing anything like that.
we did keep them lubricated, when we were drilling, my dad ended up snapping them or the end just died,
are these any good?
http://www.ebay.co.uk/itm/19pc-ULTRA-HARD-COBALT-DRILL-BIT-SET-twist-metric-/181483575146?pt=UK_Home_Garden_PowerTools_SM&hash=item2a4143976a
RE: best drill bits - welshpug - 27-02-2015
Dormer.
RE: best drill bits - r3k1355 - 27-02-2015
(27-02-2015, 02:41 PM)procta Wrote:(27-02-2015, 02:39 PM)bigcheez2k3 Wrote: I can't vouch for the longevity of it as it was only 2 holes but we kept it lubricated (giggity) with WD40 as you should when doing anything like that.
we did keep them lubricated, when we were drilling, my dad ended up snapping them or the end just died,
are these any good?
http://www.ebay.co.uk/itm/19pc-ULTRA-HARD-COBALT-DRILL-BIT-SET-twist-metric-/181483575146?pt=UK_Home_Garden_PowerTools_SM&hash=item2a4143976a
Those look similar to the set I've got.
RE: best drill bits - Uberderv - 27-02-2015
Yup cobalt bits are the shizzle.
RE: best drill bits - Dum-Dum - 27-02-2015
The Bosch titanium coated ones are good for the price.
Above that really good ones start getting bloody expensive.
RE: best drill bits - 306carter - 27-02-2015
Dormer with a doubt.
RE: best drill bits - ConorTRG - 27-02-2015
Another shout for former best bits I've used. You can pick them up cheap enough on ebay.
RE: best drill bits - daddyfixit - 27-02-2015
go to nearest "toolstation" they sell silverline branded cobalt drills in twin packs and work well, I bought a shed load after trying them out.
do not buy the packs of silverline jobber drills----as usefull as spaghetti for drilling custard.
RE: best drill bits - Poodle - 28-02-2015
How fast are you drilling? They will go blunt quickly if you run them at full tilt. I've been using cheap drill bits for yonks without too much issue, as long as i treat them gently. I found halfords ones are pretty easy to snap though...
RE: best drill bits - 1616six - 28-02-2015
Poundland!
Il never forget the day I knocked the drill onto hammer setting & then tried to drill a number plate with a pound land drill bit... The bit literally 'unravelled' if that makes sense? It looked like a straight piece of metal & it was only used for a couple of seconds until I realised it was hammering!
RE: best drill bits - Rippthrough - 28-02-2015
(28-02-2015, 07:44 AM)JJ0063 Wrote: Poundland!
Il never forget the day I knocked the drill onto hammer setting & then tried to drill a number plate with a pound land drill bit... The bit literally 'unravelled' if that makes sense? It looked like a straight piece of metal & it was only used for a couple of seconds until I realised it was hammering!
That is how most cheap drill bits are made to be honest, twisted then just hardened and ground on the tips, higher quality bits will be ground straight out of a HSS blank. Whilst cobalt can take a bit more heat, they also usually have a much thicker web for strength, which means hand drilling will take a lot more thrust to cut compared to more normal drill with a thinner web.
Get something HSS, 135* point angle and ideally with split point tips, Heller, Dormer, Osbourne, Titex are all damned good quality without being insane price wise, and if you look after them should last you many years even drilling hardened steels, titanium alloys, etc.
Then buy a cheap set of ebay specials for those shitty jobs where you need to knock them in with a hammer and don't care if they die.
RE: best drill bits - Niall - 28-02-2015
A lot of it is how you use them. You could have done of the best drill bits going and still destroy them prematurely if you've got the drill flat out through a bit of 4mm steel with no lube.
I use Bosch titanium ones at work like Dum says and they are very good. Funnily enough cheapish masonry bits, I use B&Q own brand ones and they are great for cheap ones haha
RE: best drill bits - Toms306 - 28-02-2015
Ah this explains why I get through so many drill bits...I'm an impatient bastard and have blunted/snapped several expensive drill bits so far.
RE: best drill bits - procta - 28-02-2015
(28-02-2015, 07:27 PM)Niall Wrote: A lot of it is how you use them. You could have done of the best drill bits going and still destroy them prematurely if you've got the drill flat out through a bit of 4mm steel with no lube.
I use Bosch titanium ones at work like Dum says and they are very good. Funnily enough cheapish masonry bits, I use B&Q own brand ones and they are great for cheap ones haha
niall, how do you do a job with your drill bits? as I suspect my dads using them wrong, do oil the job right up before hand? to try and keep the drill bit cool.
RE: best drill bits - Niall - 28-02-2015
Depends what you're drilling mate. Most I normally do at work is about 2mm steel doing panel casings. The key is slow RPM, fair bit of pressure on the drill and to try and keep the bit cool, some sort of cutting oil (although I just use WD40 as I hardly put mine through much pressure)
RE: best drill bits - procta - 28-02-2015
(28-02-2015, 08:19 PM)Niall Wrote: Depends what you're drilling mate. Most I normally do at work is about 2mm steel doing panel casings. The key is slow RPM, fair bit of pressure on the drill and to try and keep the bit cool, some sort of cutting oil (although I just use WD40 as I hardly put mine through much pressure)
my dad was using engine oil, so wd40 is the best for the job. I will keep that in mind.
RE: best drill bits - Niall - 28-02-2015
No all you're trying to do is keep the bit cooler. Less friction = cooler so.....
Most people use them to fast and that just wrecks them.
RE: best drill bits - procta - 28-02-2015
(28-02-2015, 08:25 PM)Niall Wrote: No all you're trying to do is keep the bit cooler. Less friction = cooler so.....
Most people use them to fast and that just wrecks them.
I think my dad might be going at them too quickly then, as he has killed some good bits, But he is too hand fisted with stuff, Many things he has knackered up, and me and my mum have had to re do!
RE: best drill bits - darrenjlobb - 28-02-2015
A decent drill makes a difference, but the operator makes the biggest differece...
When drilling metal i find ( even with hss) slow speeds and plenty of pressure is the key, second you go to fast, smoke flys, tip melts and bits wrecked..
Slow and steady and the drill bits will last years, or months if you use them alot like I do! Drill press / pillar drill also everytime where its possible, will safe bits this way also!
Also worth noting, ive never had proper "cutting fluid" in my life until a few months ago when i aqquired a bottle for free...wow..never look back, well worth having, magic stuff!
RE: best drill bits - procta - 28-02-2015
getting some good info! I am taking notes of all this like, as I will be doing some drilling work on my car, ( front droop stops)
RE: best drill bits - Uberderv - 28-02-2015
Yes go too fast and the lube/cutting oil burns off (smoke). You need to apply a good amount of pressure and try to keep the bit straight. Using proper cutting oil will make a difference, also starting with a pilot and moving up a couple of sizes and so on.....
RE: best drill bits - toseland - 28-02-2015
those workforce ones from aldi..
had a set of those for years, probably made by dormer or someone silly high quality but they are still razor sharp..
RS bits are pricey but good.,
RE: best drill bits - Spoonaltap - 21-03-2015
What about high quality screwdriver bits? Everytime I try and put together something that needs screws put in I end up knackering the head.
Re: RE: best drill bits - Seb_Ryan - 21-03-2015
(21-03-2015, 04:31 PM)Spoonaltap Wrote: What about high quality screwdriver bits? Everytime I try and put together something that needs screws put in I end up knackering the head.
Hammer?
RE: best drill bits - tigerstyle - 21-03-2015
(21-03-2015, 04:31 PM)Spoonaltap Wrote: What about high quality screwdriver bits? Everytime I try and put together something that needs screws put in I end up knackering the head.
Wera or Milwaukee Impact bits