Recommended Twist Drills

[John Morrison]

Have a really taxing drilling job to do, on a failed locking wheelnut,

whats the best drills for such a job?

John.

[Tom Boyd]

Irwin ones are very very good  

 

Tom

[David B2]

I have recently used a Screwfix Dewalt Cobalt drill, stock number 2291V.  7.5mm but they do others in this series. 

Excellent drill with special pilot meant no need to centre punch and it worked Also hex shank. I used it to drill out spot welds and found it very long lasting. Still going strong after doing one whole floor/sills of a TR4A restoration. Although described as Cobalt HSS I found it significantly better than the so called special 8mm cobalt drills that are sold for spot weld removal. 

David B

 

[Lebro]

Sounds wrong, but try a masonry drill, they work surprisingly well with hard steel.

 

Bob.

[John Morrison]

Thanks Guys,

I've ordered the Irwin Ones,

apparently I'm prime with Amazon now?

John.

[Drewmotty]

Most locking wheel nuts are case hardened so a Dremel fitted with a grinding stone may be needed to take the hard skin off before attacking it with a drill. 

Ive had good results in the past by finding a spare bi hex socket a size under the one which will fit over the nut and smashing it onto the nut with a big hammer.  By the time the socket has been forced over the nut the impacts will have helped free off the nut and a 1/2” drive “persuading” bar should spin it off. 

Let us know how you get on. 

Edited November 9, 2018 by Drewmotty

[RogerH]

Hi John,

           these are good drills (see pic below)

They are available as righthand, lefthand and straight fluted all in ONE drill.   Very handy if you are not sure what to do.

 

Roger

 

Edited November 9, 2018 by RogerH

[stuart]

What is that Roger?

Stuart.

[RobH]

To paraphrase an old non-PC couplet:

"Twist-drills out of old Hong-Kong, all too frequently go wrong.........."

[Charlie D]

The easiest way to make your own “Roger drill bit” is to buy a normal drill bit from the pound shop, drill a hole in some very tough concrete (With hammer action and pushing as hard as you can until the drill bit binds solid) and then switch the drill to reverse.

I’ve made several when putting up curtain poles.

Charlie.

[Chilliman]

 

Quote

What is that Roger?

I think the question should be -  What was that Roger?!

[foster461]

5 hours ago, RogerH said:

Hi John,

           these are good drills (see pic below)

They are available as righthand, lefthand and straight fluted all in ONE drill.   Very handy if you are not sure what to do.

 

Roger

 

They also come in red

[Mark69]

Plus1 for Irwin HSS, had a set for a couple of years good quality and last ages. Used on a regular basis.

[RogerH]

Hi Folks,

       not sure where my multi-fluted drill came from. recommendation - DO NOT BUY CHEAP drills.

Most of the big names are good - Dormer, Irwin etc.

 

The above drill 'picked up' in a piece of sheet steel. before I could turn the power off I had produced a work of art.

 

I see from Stan's pic that the USA produce lefthand liquorice sticks.  What do we get in the UK?

 

Roger

 

 

 

[stillp]

On 11/8/2018 at 10:27 PM, John Morrison said:

Thanks Guys,

I've ordered the Irwin Ones,

apparently I'm prime with Amazon now?

John.

If you're not very careful they sign you up to a "free trial" of Prime, so you might want to cancel that membership before they start charging you.

Pete

[John Morrison]

Thanks Pete, and all.

I'll let you know how the job goes.
john.