Decent Drill bits

[-Paul-]

I'm looking to get some masonry and normal drill bits and was looking at the following two sets, what do you think?

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=A337699&ts=76757&id=88598

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=A337698&ts=75793&id=95497#

Also are Diamond coated screwdriver bits worth it (I presume the 6-10ga means that particular one is suitable for screws 6-10 gage?)
http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=100403&ts=76939&id=19449

 

[gcol]

http://www.dm-tools.co.uk/product.php/section//sn/IRW10501940
These are the business. Can be used on wood and masonry.

 

[Jasonb]

Cant beat Dormer for quality when it comes to twist drills.

So many of the imported ones cut oversize or don't even run true

Jason

 

[gcol]

Have you tried the Irwin ones Jase?

 

[Bodgeit and scarper ltd]

Dormer are the best, most engineering firms use them so there are lots of liberated ones for sale on e-bay.

 

[gcol]

"liberated"

 

[Hitachimad]

Masonry bits, i tend to use either the dewalt extreme ones (as in your link) or Bosch S4 bits.


Hss/ twist, quite agree with Jason, Dormer are the best. But expensive, Irwin ones are quite good. Even a lot of the cheaper ones are okay, they just havnt been sharpened properly from the factory.

 

[-Paul-]

Thanks for the help guys
The Dorma ones look a bit expensive tbh. I'd looked at that cobalt set I linked to as I thought colbalt was supposed to be better than Titanium or normal drills.

There are these Irwin ones here http://cgi.ebay.co.uk/Irwin-Profess...6QQihZ001QQcategoryZ50383QQrdZ1QQcmdZViewItem

Or these Dormas (but don't seem to have the Titanium coating)
http://cgi.ebay.co.uk/JOBLOT-A001-D...2QQihZ011QQcategoryZ11705QQrdZ1QQcmdZViewItem

Would either of these be any good?

 

[Trazor]

Cobalt drills are harder than standard jobber drills, and you will break them more easily in a hand drill.
They are more suited for for fixed/pillar drills etc.
You only need them when drilling into hardened materials.

 

[gcol]

You only need them when drilling into hardened materials.

Not strictly true. We used to use cobalt step drills on a CNC sliding head lathe at a place I used to work at for drilling mild steel - they lasted an age with no chipping.

 

[-Paul-]

Thanks, it looks like Cobalt ones aren't really suitable for me then as I'm looking for ones solely for use in a hand drill. Anyone got any thoughts on the two sets I linked to?

There are these Irwin ones here http://cgi.ebay.co.uk/Irwin-Profess...6QQihZ001QQcategoryZ50383QQrdZ1QQcmdZViewItem

Or these Dormas (but don't seem to have the Titanium coating)
http://cgi.ebay.co.uk/JOBLOT-A001-D...2QQihZ011QQcategoryZ11705QQrdZ1QQcmdZViewItem

 

[gcol]

Both look ok. Be aware though that you'll not be able to resharpen the Irwin ones and keep that fancy cutting edge. With the Dormer drills you can resharpen em to your hearts content.
It depends what you'll be using them for. If wood and metal, get the dormers, if wood and masonry, get the Irwin ones I sent you a link to first. These will do both so when fixing timber to walls you can drill straight through the wood and into the wall without needing to move the timber or change to a masonry bit. Those that use em swear by em.

 

[Jasonb]

Have you tried the Irwin ones Jase?

No, usually use the Bullet ones in the cordless for masonary and hex recess twistdrills to fit my Snappy holder in wood.

Didn't know you were a metal basher, I only do it as a hobby, here are a couple of pics of what I get upto in my shed. You can see why I don't want inaccurate drill bits

Jason

 

[gcol]

You're missin out Jason, you need to try a set.
Not a metal basher as such - I used to program a CNC lathe for small parts used in electrical swicthgear.
I like your engines - nice work.

 

[Trazor]

This site probably contains everything you will need to know about drills

http://www.tapdie.com/html/drills_guide.html

Look at the menu on the left, also very informative.......