Not understanding drill bits

[hamd01]

So I'd appreciate some help from anyone who knows about drills and drill bits. I've ordered a drill bit that 600 millimeters long but it doesn't have a circular end so it won't fit securely into my drill. The chuck doesn't tighten as well as it does with a fully circular drill bit.

You can see in a photo the drill bit that doesn't fit securely on the left and an example of one that fits perfectly on the right.

I can understand that the drill bit simply isn't going to fit but I've had this a couple of times in the past and haven't been able to find an answer.

It's obviously time to upgrade my drill but can anyone tell me what type of drill I need to buy in order to be able to accommodate both the types of drill bit in the photo?

 

[Alec_t]

The bit with the fluted end is for an SDS drill.

 

[Rodders53]

You appear to have bought a SDS drill bit

SDS: The original German was "Steck-Dreh-Sitz" meaning Insert-Twist-Stay. As the bit evolved, it has come to be known as a Slotted Drive System or Slotted Drive Shaft.

Special drills use them for a percussive hammer action with/without rotation of the 'bits'. https://www.machinemart.co.uk/c/sds-sds-and-sds-max-drills/ has some examples

 

[Nige F]

Interesting about the German origin . Like the beetle KDF vagen Strength through joy, A.H's slogan

 

[^woody^]

You can carefully align it in a chuck and it'll be near enough.

 

[hamd01]

Thanks guys appreciated. I ended up heat gunning a cable tie onto the end...did the trick.

 

[freddiemercurystwin]

OK then, I think it's fair to say that none of us saw that coming!

 

[Mrs Ten Names]

A proper SDS drill is usually more powerful (hammer and torque) than a typical hammer action drill.
They may be equipped with a clutch to reduce injury to your wrist.
Judging by the photo, and the shank of the SDS bit, I'm guessing it's about a 12 to 15mm diameter.
A SDS drill would be preferable.

There are two sizes of SDS. SDS at 10mm diameter, and SDS Max at 18mm diameter.
The larger size are usually used for the large 'Breaker' type machines.

 

[noseall]

You can carefully align it in a chuck and it'll be near enough.

Yeah, but repeatedly banging a lump hammer on the back of the drill, can be a ball ache.

 

[^woody^]

Yeah, but repeatedly banging a lump hammer on the back of the drill, can be a ball ache.

I would have thought that someone of your experience would know not to use a hammer on soft materials. Use a rubber mallet.

 

[mrrusty]

If you're doing this again, you could do worse than get one of these (what I have) https://www.kelvinpowertools.com/bosch-gbh2-26f-sds-plus-hammer-drill-qc-chuck-c-39-p-11322

Not too massive and has swappable chucks for SDS or standard bits.

 

[Deluks]

Yeah, but repeatedly banging a lump hammer on the back of the drill, can be a ball ache.

That's what rock climbers used to do before the advent of battery SDS drills. Still used.

 

[noseall]

That's what rock climbers used to do before the advent of battery SDS drills. Still used.

View attachment 357282

We used to use summat similar, if there was a power cut, and the star chisel came out of the bucket...

 

[Mrs Ten Names]

This was the only tool available when I were a lad, and there was no electric available:

 

[opps]

That's what rock climbers used to do before the advent of battery SDS drills. Still used.

View attachment 357282

Why didn't they marry it up with the old skool impact drivers - the ones that put screwdriver bits in and then whack with a hammer that simultaneously twist the bit?