4.25 inch core cutter

[rob4beer]

Hi Guys,

I Need to cut a 4.25 inch hole through my walls to fit a passive air vent. Ive seen a bit on Amazon for about 20 quid, diamond tipped. but not sure what drill I could use it with (I have a cordless and corded standard drill, I know hammer drills are out) but are these good enough?

Advice please experts. Im drilling through a normal, brick built 1890s terrace wall.

Thanks, Rob

PS this is the bit ive seen
http://www.amazon.co.uk/gp/product/...&pf_rd_t=101&pf_rd_p=317828027&pf_rd_i=468294

 

[foxhole]

Sds drill, minimum.

 

[Threadjacker]

Anything Silverline is cheap Chinese rubbish, nothing more than a £20 paperweight for a tradesman.

It may cut a hole for you though before wearing out, whatever drill you use it has to be powerful and most importantly have a clutch.

You need to buy an arbour and pilot drill as well or you could hire decent cutter and core drill at the local hire shop.

 

[Nigel_Cro]

Having done this recently - I go with the above - don't waste your money on a cheapy chinese paperweight - go to your local hire shop and get the proper gear for half a day - the money spent will easily be compensated by the time saved and the job being done properly.

 

[Belle427]

as said try to hire one, you will need a decent quality sds drill with clutch to use it anyway. Dont even try to use a battery drill etc as it will kill it.