core cutting

[J.C.E]

evening all

usually when I have to core drill for fans for a job with my company- we pick up the makita core drill from office happy days

but I have a private job coming up that needs a hole drilled for fan- and I don't have my own core drill

can I use the drill below- just use the drill setting

Bosch 2kg SDS Plus Drill GBH2000 240V | SDS Drills | Screwfix.com

 

[lockhes]

Yeah but won't be as good used 1 similar and took longer but wouldn't use it all the time to core holes

 

[joehat]

I use a £40 one from screw fix as I only do one very few months , I've done about 4 so far and one was through about a metre of concrete and stone wall , took about an hour though but still going. Not sure if a core drill would have done much better, it takes about 8-10 mins to go through 2 breeze blocks .
And if it brakes I'll go take back under guarantee if it's under a year, can't argue for £40.

 

[amlu]

will do for one-off job
did maybe 20 holes with my bosch sds, still going strong.

 

[Geordie Spark]

evening all

usually when I have to core drill for fans for a job with my company- we pick up the makita core drill from office happy days

but I have a private job coming up that needs a hole drilled for fan- and I don't have my own core drill

can I use the drill below- just use the drill setting

Bosch 2kg SDS Plus Drill GBH2000 240V | SDS Drills | Screwfix.com

Yes you can - just using drill setting - but it will take quite a bit longer to cut than the Makita core drill as a dedicated core drill runs at a higher speed than you SDS.

Also, don't make a habit of it as you'll find your SDS won't last long - trust me - I know from experience!!

 

[R G]

Used and abused mine , the clutch has nearly had it doing core drilling and all other work , but then I've had it for 3 years , so can't complain ....

 

[NDG Elecs]

Listen to Geordie as he be the king of coring! :iagree:

 

[Andy78]

Same here.
I used to use a 2Kg DeWalt multi purpose SDS drill for coring 4" holes with. It wasn't new to me and I didn't pay for it so all was good. It definitely killed it though. That sort of pressure and torque heats up the baby drills in no time. It would regularly overheat and spit liquid oil out of it's chuck, then the clutch died.
As said, it will also take you ages.

 

[davesparks]

It probably wouldn't cost too much to hire one from a local hire shop for a day

 

[Geordie Spark]

Listen to Geordie as he be the king of coring! :iagree:

Yep .... back in the early '70s when it was a specialised subject with only specialised companies doing it - one of which I worked for - I made a core drill 3 feet in diameter and the rig to drive it.

The rig was powered by compressed air and it together with a diesel driven compressor was mounted on the back of an ex-army truck. A water bowser was required to keep the drill cool and it stood alongside the rig.

The job was for the (then) London Airport who wanted a serias of 3 feet dianeter holes in their runways and we tested the rig in our works yard one morning before the gaffer arrived.

I took great delight in drilling the hole right where he parked his car. He arrived sometime after 9am & was not best pleased.

I tell ye ... some folk just have no sense of humour!

Then there was the Eldon Square shopping Centre which was under construction at the time. The flloors were cast reinforced concrete and then the holes were sawn through for the escalators using Floor Saws which are circular saws with 2 or 3 foot dia. blades mounted on a glorified go-kart. We made the whole thing incuding the blades. Nowadays you just buy them.

Another nice little job was to make the core drills, extension shafts (I forget how many but they were each 10 feet long) and the rig to drill a series of 10" diameter holes throught this:

The drilling & cutting of reinforced concrete has come a long way since then & I have to take my hat off to the blaggers who did that Hatton Garden Safe Deposit heist.

That drilling was just pure quality!!

 

[Pete999]

evening all

usually when I have to core drill for fans for a job with my company- we pick up the makita core drill from office happy days

but I have a private job coming up that needs a hole drilled for fan- and I don't have my own core drill

can I use the drill below- just use the drill setting

Bosch 2kg SDS Plus Drill GBH2000 240V | SDS Drills | Screwfix.com

Tool hire shops are priced reasonably cheap for a days hire drill, pilot bit and core

 

[Octopus]

It probably wouldn't cost too much to hire one from a local hire shop for a day

HSS charge about £40 per day plus a charge for the "use" of the core drill bit if you use more than they allow.

Add on 2 hours - 1 to go and get it and a 2nd hour to take back and you should just order a decent one and keep it safe and clean!

 

[LankyWill]

if you want a decent one buy a millwaukee core drill. Its a beast probably done 800+ with it and its still going strong.

 

[Geordie Spark]

if you want a decent one buy a millwaukee core drill. Its a beast probably done 800+ with it and its still going strong.

Millwaukee is the mutts nuts.

The Industrial Black & Decker made in USA were what we used for smaller drilling rigs - just take the handle off & bolt it onto a rig & it'll do up to 12" diameter without much trouble.

The rigs for those had hollow bases & a rubber seal around the bottom.Connect a vacuum pump to it & you can literally stick the whole thing onto a wall and shove a 12" core straight through - with just vacuum keeping it on the wall.

It can get interesting when the vacuum fails ..........

 

[davesparks]

HSS charge about £40 per day plus a charge for the "use" of the core drill bit if you use more than they allow.

Add on 2 hours - 1 to go and get it and a 2nd hour to take back and you should just order a decent one and keep it safe and clean!

Blue HSS or orange HSS?

There's an FTH place next door to Wilsons in guildford now so it's a case of popping next door to hire stuff when I pick up the materials.

To be honest for a core drill I just borrow one from my mate the plumbob (if I can't con them into drilling it for me)
On that note have you ever crossed paths with mr Sines and his merry band of plumbers?