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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 4236   
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Bench grinder and learn to do it manually. I was taught by my Dad, a toolmaker, but theres loads of vids on the ‘net. The advantage of this is you can make specials. Need a spot weld drill? Grind one from a twist drill. Need to drill into hardened steel? Regrind a masonry drill. It’s most satisfying. 2007 110 TDCi Station Wagon XS
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17th Mar 2021 10:27pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3480  
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Bench grinder. It takes some practice, but once you hone your skill, you will get to grind any shape you want. Not all drill bits are the same. Plus you can grind chisels, center punches, you name it.
I would suggest the best you can afford. And then true your wheels as well. A grinder that vibrates would not give you good results. My 2c. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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17th Mar 2021 10:29pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17603 
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https://uk.rs-online.com/web/p/bench-grinders/3890777/
Cheaper version are available. Used with a suitable bench grinder this type allows accurate sharpening of a very wide range of sizes. |
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17th Mar 2021 10:30pm |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018 
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Or if you have the money go Tormek, T-8 or T-4 with appropriate jig:
 Click image to enlarge Click image to enlarge You'd need to have a lot of dull bits to get your moneys worth. |
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18th Mar 2021 6:57am |
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| Leamreject Member Since: 19 Dec 2020 Location: Middle Earth - Leamington Spa Posts: 970  
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I use a bench grinder, I can control the shape pressure and heat generated to get the best result for the drill bit. Ride like you stole it!!
If I’m not on a bike it’s because only a 4x4 will do… 2011 2.4 Puma 90 HT |
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18th Mar 2021 7:28am |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1852 
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ANother vote for a bench grinder and a few instructional videos.
If I can manage this, then a hands on/practical guy like yourself would have no problem. (I was going to say 'master this' - but that would have been wrong!) With my grinder, one of the 'rests' has a groove in it to help you get the right angle for drill bits. I'm sure I'm not brilliant at this, but if I feel I'm getting nowhere with the drill, whip it out, a few secs on the grinder, and the difference when you come back to the job is really noticeable. I've also learnt more over the years about specific speeds for specific metals, and the benefits of lubrication and stopping if things get too hot.....  Donald
1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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18th Mar 2021 9:06am |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1769 
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I really need to sort my bench grinder out with a new stone, but to get used to it, even an average sharpen can be a huge benefit. In a pinch, I've managed to get a decent edge back onto drills with an angle grinder...
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18th Mar 2021 9:11am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17603
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Hardcore tool porn of the highest order! Oh, the palpitations! I think I need to lie down for a bit.  |
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18th Mar 2021 9:44am |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018
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Hey man maths at it's best when you can justify a 4 figure spend to be able to sharpen a jobbing bit worth pennies.
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18th Mar 2021 12:57pm |
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| Rashers Member Since: 21 Jun 2015 Location: Norfolk Posts: 3564 
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Bit off topic, but still drill orientated, what drills do you all buy.
When I used to work on site, 25 years ago, we got Presto HSS drills from the local engineering merchants in Norwich. They were mostly 6mm (for what we did) and they would last for months (we used to drill holes in metal electrical containment). The drills I have purchased recently have been rubbish. In fact, I have resorted to going back and using some of those drills from my past life as the new ones are no good. Might be worth trying to sharpen some of these old drill bits up. I do like that drill sharpening machine  |
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18th Mar 2021 3:42pm |
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| rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2238 
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I generally use the cobalt bits from Toolstation as cheap general purpose metal bits. I have found their performance and durability excellent as long as you don't get carried away with the speed/pressure.
https://www.toolstation.com/power-tool-acc...l-bits/c82 I am slowly replacing my Dewalt extreme bits with them as required as the Dewalt ones are far too aggressive for thin sheet use in a hand drill. Despite cobalt bits meant to be more durable than HSS, I find that using a bit of cutting lubricant helps no end. Steve 02' 110 TD5 Double Cab Rebuild Thread |
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18th Mar 2021 4:17pm |
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| jaygti Member Since: 04 Nov 2012 Location: essex Posts: 388 
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We use hertel drills almost exclusively at work now on small stuff.
6 mm or under get chucked in the bin when they’re blunt. 6 to 10 mm might get ground up. Generally we just just use carbide drills that are close and then bore to size. Click image to enlarge This is an 11mm carbide drill. It’s so fast it’s almost like a hole punch. 2002 td5 90 county hardtop |
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18th Mar 2021 4:36pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3480
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Carbide is the hardest and will maintain the sharpness for longest, but very difficult not to chip it or break it on a hand drill. So best is to use carbide on a good drill press or milling machine.
Cobalt is also very good, and can even drill hard materials like 12.9 bolts even on hand drills. High speed steel (HSS) should be adequate for normal use, but some cheap HSS are only good for drilling cheese, or plastics. And since I mention plastics, I go back to the original topic.. drill bits sharpened for steel/metal is not ideal to use on plastic as they will bite too much/fast in plastic. Drill bits for plastic generally have a flat cutting edge, that scrape the material rather than digging into it. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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18th Mar 2021 9:46pm |
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| L110CDL Member Since: 31 Oct 2015 Location: Devon Posts: 10874 
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Thank you all for your reply's
I noticed in the you tubes that the angle grinders were larger than i have, the 2 i have are smaller, so one works of battery and the other is electric, will these be ok to use ? Also do you have to have special disc's or as i saw in the tube a pad with a stick on paper disc ? this is all new to me, thank you again  Clayton.
1996 Golf Blue 300Tdi 110 Pick up. Keeper. |
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19th Mar 2021 9:55pm |
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