MK9R
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| posted on 30/11/09 at 12:45 PM |
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I need a set of drill bits
All mine are bust or blunt, so time to buy another set. I've got a load of stainless to drill for 5mm rivets on friday, but want a range from
about 3mm up to 10mm and preferably have a few spares of the common sizes to break, i.e. 3 - 6mm.
Any recommendations??
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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flak monkey
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| posted on 30/11/09 at 12:53 PM |
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Have a look on ebay for a Dormer drill set 1-13mm theres one on there for about £50.
Cant get on ebay at work, but a search should find it.
Should last forever if treated right.
Sera
http://www.motosera.com
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wilkingj
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| posted on 30/11/09 at 01:10 PM |
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Stainless is really hard. I ended up buying a couple of Cobalt drills.
They are superb for stainless. They cut thru stainless like a hot knife thru butter!
However they are also very hard and snap easily!
So take it steady, and take your time!
Cheap drills on stainless are a waste of time if you have lot of holes to drill!
Dormer drill used to be very good, I have some that are 20+ years old and still in good fettle!.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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MK9R
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| posted on 30/11/09 at 01:15 PM |
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Cheers both. Snapped 6 cheap bits last week trying to drill the stuff!!! If the drill isn't mega sharp and it just spins on the surface for a
few seconds its seems to work harden it and not even a brand new cheapy bit would touch it!!! I don't like spending a lot on bits as i always
snap them (cak hand!), but think i'll invest tin a set of these
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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flak monkey
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| posted on 30/11/09 at 01:23 PM |
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Most people run drills waaaaay to fast as well.
Stainless needs to be relatively slow and lots of pressure.
Have a look at this:
http://members.home.nl/b.ollivier/html/drillspeedchart.htm
You'll see a 6mm hole in mild steel should be 760rpm and the same in stainless would be 228rpm.
David
Sera
http://www.motosera.com
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MK9R
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| posted on 30/11/09 at 01:31 PM |
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just bought a set, not the 1-13mm you said, purely because i don't want them that small or large, so got an in between set. I'll turn the
speed down and see how many i can snap on friday!! LOL!
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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MK9R
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| posted on 30/11/09 at 01:33 PM |
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from this guy, seems well priced
http://myworld.ebay.co.uk/furyanimal/
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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02GF74
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| posted on 30/11/09 at 02:29 PM |
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machine mart and screwfix do/did a set of ti nitrided (the gold coloured tipped ones) in a big box, 10 of each up to about 8 mm when you get 5 of
each; for around £ 20 ish.
 <--- linky
note quite the same but similar
 <-- linky
[Edited on 30/11/09 by 02GF74]
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coozer
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| posted on 30/11/09 at 03:07 PM |
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These any good for ya??
http://www.toolstation.com/shop/Power+Tool+Accessories/HSS+Drill+Bits/d80/sd1250
1972 V8 Jago
1980 Z750
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Phil.J
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| posted on 30/11/09 at 03:12 PM |
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It helps when you buy the stainless steel to buy the softest grade you can get away with ( eg 302 or 18/8). This can save a lot of hassle when
drilling, machine or cutting.
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robinj66
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| posted on 30/11/09 at 06:45 PM |
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Copbalt is definitely the way to go if you can't afford the dormer jobbies.
try these for a start
De Walt Cobalt Drill bits
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Mal
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| posted on 30/11/09 at 07:05 PM |
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Try this website for a company that specialise in drills. Quick delivery and any drill diameter.
www.drill-service.co.uk
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rusty nuts
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| posted on 30/11/09 at 08:14 PM |
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Cobalt gets my vote , use with a bit of lubricant .
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