Drilling into VERY HARD concrete

[aveatry]

Could of hired one for not much more than you've spent on drill bits.

But then we wouldn't of had the drill test. --- Which I won by the way.

I think you would of got on much better if you first used a 3 or 4mm CYL-9

 

[XrayDave]

But then we wouldn't of had the drill test. --- Which I won by the way.

I think you would of got on much better if you first used a 3 or 4mm CYL-9

Perhaps so, but that would have added more expense to the job.

I think that the CYL-9 bits will deal with our 'engineering' bricks - providing the weather is dry and not windy, I'll test that out tomorrow, if not it will be Tuesday.

I'll probably get a 3.5mm and/or 4mm CYL-9 at some point for a pilot hole.

XRD

 

[freddiemercurystwin]

There are no winners in this thread.

 

[Ollyfp]

My advice would be to look for a good second-hand SDS corded drill on FBMP. Most tradies I know are upgrading to cordless ones, so I think you'll get a bargain.
Your future self will thank your present self multiple times!
Confused? I am, and I wrote it!
Keep us posted!
Olly

 

[Ollyfp]

Ask your neighbour for an sds.
My makita sds is shared between the whole neighbourhood...

Like cats then! Lol

 

[noseall]

So what is the difference between an sds drill on rotation and hammer and a non sds drill set to hammer.

Massive. Like night and day.
One relies on a hit-and-miss type hammer where the tool is vibrating. SDS uses a percussion strike at the base of the bit and will punch through anything.

 

[aveatry]

Massive. Like night and day.
One relies on a hit-and-miss type hammer where the tool is vibrating. SDS uses a percussion strike at the base of the bit and will punch through anything.

I see - thank you.

 

[noseall]

I see - thank you.

A SDS drill will continue to drill a hole through a brick, even when the hardened tip is missing.

 

[XrayDave]

Massive. Like night and day.
One relies on a hit-and-miss type hammer where the tool is vibrating. SDS uses a percussion strike at the base of the bit and will punch through anything.

Thanks. Didn't know that's how a SDS drill worked.

A quick 'Google' tells me that SDS stands for 'Slotted Drive Shaft' and that the drill bit moves forwards and backwards within the chuck. A 'hammer drill' moves the chuck containing the drill bit backwards and forwards

Makes me think that with lots of use an ordinary 'hammer drill' will 'wear' and ultimately, the 'hammer action' will lose its efficacy?

Dave

 

[noseall]

Thanks. Didn't know that's how a SDS drill worked.

A quick 'Google' tells me that SDS stands for 'Slotted Drive Shaft' and that the drill bit moves forwards and backwards within the chuck. A 'hammer drill' moves the chuck containing the drill bit backwards and forwards

Makes me think that with lots of use an ordinary 'hammer drill' will 'wear' and ultimately, the 'hammer action' will lose its efficacy?

Dave

There is no comparison really. SDS is brutal in comparison and effortless.

 

[opps]

So what is the difference between an sds drill on rotation and hammer and a non sds drill set to hammer.

A non sds drill- as it rotates, the drill bit momentarily drops back towards you. It is you pushing against the drill that forces it forward again.

A SDS drill actually fires the drill bit forward.

Not the best explanation.

If you run either drill without touching the wall you will see that the SDS is actively firing the drill bit forward. You will not notice a difference with the non-sds drill.

 

[opps]

A quick 'Google' tells me that SDS stands for 'Slotted Drive Shaft' and that the drill bit moves forwards and backwards within the chuck. A 'hammer drill' moves the chuck containing the drill bit backwards and forwards

Actually it stands for Steck – Dreh – Sitz ("Insert – Drill – Attachment").

Not surprisingly, Bosch (who invented it in 1975) used a German acronym.

According to Wikipedia, Bosch use "Special Direct System" in non-german speaking countries.

Drill bit shank - Wikipedia

en.wikipedia.org

 

[opps]

Makes me think that with lots of use an ordinary 'hammer drill' will 'wear' and ultimately, the 'hammer action' will lose its efficacy?

That is good question.

I have an 30+ year old corded metabo hammer drill. I haven't noticed a deterioration in the efficiency of the hammer feature, but I seldom use the drill anymore.

In the above image, parts 53 and 50 look like they are the hammer action components. I guess in time the "sticky out bits" on the rear of 53 will become less deep and possibly rounded.

 

[Notch7]

I have no idea what these concrete lintels are made out of, but boy oh boy is it REALLY HARD stuff!!

bits of flint and steel reinforcing

 

[noseall]

I have no idea what these concrete lintels are made out of, but boy oh boy is it REALLY HARD stuff!!

The material within is dense because it is vibrated to rid the conc of air.