We need to cut 2 circular holes of around 650mm diameter through a brick/block wall.

Any idea's how this can easily be done?

 

drill

 

Hire a core cutter

 

 

Yes, but we are talking 650mm here. Places stop at around 150mm.

 

Sledge hammer?

 

As damo said use a drill . Mark up your hole on the block work then drill lotsa holes like an outline. Then chop the hole out with a bolster.

 

stitch drill it

 

I reckon that would take about a week. We actually need 2 of these holes!!

I know that Diamond core drills exist in this kind of size, but where to get one? Even if we have to pay someone to come and do it.

 

Serious, youll do both holes in under an hour. Old mans a builder and he used to get me todo similar shite jobs.

 

Never question a man in the know

unchballs:

 

if its just thermo blocks make a hole and get the chain saw in there but ive never done circles only door ways etc

 

i would chain drill it aswell

if you did get a core dril for that size,,, the drilling machine will be large,, and i would hate to see it snatch

 

 

Would be more of a body breaker than a wrist breaker eh

 

i was doing a 9" hole with a core drill a few years ago,,, massive drilling machine,, and it nipped in the wall,,, chucked me clean off the ladder and my wrist was fucked for weeks

 

Aye it fookin knacks when the drills do that, never done it up a ladder ming though, Health and Safety Garth

 

I would have thought loads of drill holes and then knock it through , get Chris to do it would keep him busy, i presume it's for some ventilation

Mike

 

i know i know naughty boy

 

have you got an SDS hammer drill, if so use this with a large chisel adaptor and you'll have it out in no time.

 

get a diamond driller in

but you wont get a core done that size it will have to be done in say a 6" stages

 

Holes that size sound like a bank job!!!!

 

What i wanna know is what in the hell demands not one, but TWO 650mm holes in a wall?!

Still, won't need a lintel or support as its a load bearing shape

 

What the hell needs a hole that big?!

 

We have twin 2.5kw extraction fans to complement our 11kw 35,000 CFM main fan for the Rolling Road.

We figured the same, that if we cut a circular hole, it won't need a lintel.

So, it looks like it's going to be hard graft then?

Anyone want to come and do it in exchange for a RR tune??!!

 

An 11kw fan, jesus man. I shouldn,t want to stand to close to it at full chat. I take it it is 3 phase, and has star- delta start up?

 

LOL. Yes it is 3-phase. We have just bought a Danfoss Inverter to run it, giving us full speed control, I imagine that might be a little on the powerful side for your bog standard Citroen Saxo's.

See how that compares to what you see tomorrow!!

 

as all ready said mate chain drill it it wont take long and as for a core 650mm well that will take a big drill to turn that and if you can find a firm that can do it, it will probley cost quite a bit as i wont be a drill that you hold it will be on a frame / stand.

 

Will probably just be breeze block anyway, just use a knife and fork

 

Im a diamond driller whats the wall brick and breeze / concrete slab etc this wouid be a peice of cake and we charge a day rate of £250 wouidnt be a problem for a established diamond driller

 

I dont think you will have to worry about straping the cars down, the puff from that beast should hold em back!!!!! You may have to book me in for a tune up soon as i had a dissapointing day on sunday The less said the better.

 

I'd use a core drill.

Just make sure the drill has a clutch as you may end up breaking your wrists if it decides to bite back.

 

Remember we are only 2wd though!!

We had the fan running at the weekend. The Speed Controller has a digital display and we saw 19.4hp from it!!!