Help buying a cordless drill

Hi,

I hope that someone is able to help. I have been working on my car over the weekend and I have been trying to get off a screw that holds in one of my brake discs.
The bad news is that the head got chewed up and I need to drill it out.

I don't know anything about cordless drills but was having a look at the following:

http://www.my-tool-shed.co.uk/p14097/Einhell_BT-CD24i_24_Volt_Hammer_Drill_with_2_x_Batteries/product_info.html

I assume that you can turn off the hammer action on the drill?

I was going to use a centre drill bit and possibly tap bit if required. Just been doing some reading and watching a few YouTube videos to find out what to do.

Regards,

Ross
ross13Asked:
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JohnBusiness Consultant (Owner)Commented:
Unless you need a hammer drill for other projects involving concrete, you do not really need a hammer drill.

You will want a variable speed drill and some really good drill bits for metal. One way to do this is to gently center punch in the center of the bolt so that you can use a small size drill bit that will not jump out of the bolt. Then work up in size for a small screw extractor (the reverse of a tap).

So you need a good center punch, a hammer, good drill bits for metal, small screw extractors, and a good variable speed drill.  Work carefully. The most important thing here is a good center punch so as to hold the drill bit and prevent skipping.

Be careful of damage to the disk (removing metal) as this will ruin its balance at speed.

.... Thinkpads_User
Michael-BestCommented:
Do not drill it before trying to loosen it with an impact driver/wrench first.

 An impact driver/wrench is a tool that delivers a strong, sudden rotational and downward force.
 In conjunction with toughened screwdriver bits :

http://www.kk.org/cooltools/archives/000723.php

Hpe ths hlps.
Michael-BestCommented:

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ross13Author Commented:
Thanks for the help. I am going to try this weekend and will update this post with how I get on.

Cheers,

Ross
ross13Author Commented:
I ordered an impact driver and gave this a try with out any luck. I tried to heat the screw up as well and tried it but it would not move. I tried the screw extracter that i ordered but no luck. I was going to try and drill the screw out but the battery run out on the drill. It was a cheap drill i bought so i cant expect much.

Thanks for the help.

Regards,

Ross
Victor CarterCommented:
Drill bits are one of the most important used for drilling. They come in a wide range and a variety of types. Different types of bits are designed specially to serve different purposes. You need to choose the one that serves your drilling purpose well.
Talking about the cordless drill, these are the electric drill bits which use batteries to get charged.

Some points that you can consider while looking for the best cordless drill are as follows:

1. Choose voltage based on your job.
2. Stick to one manufacturer and battery type.
3. It should be easy and smooth to work with.
4. Choose the one with LED so as to ease your work at night.
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