70mm holes...

[Spare Tool]

Got 3 downlights in a feature boxing to do next week, what's the easiest way of cutting a 70mm hole out of the centre of a porcelain tile....?

 

[Chalker]

Out of stock at Ats , but some here.
365 drills.
http://www.365drills.com/pages/stock.htm#70

 

[Spare Tool]

Thanks for that link...£17 per hole just for the drill bit, woooow think I might have to up my meterage rate.

 

[John Benton]

Thanks for that link...£17 per hole just for the drill bit, woooow think I might have to up my meterage rate.

Doesn't affect your rate, just charge for holes drilled like I do for porcelain

 

[Chalker]

Thanks for that link...£17 per hole just for the drill bit, woooow think I might have to up my meterage rate.

hope your good with the grinder then! :8:

 

[Spare Tool]

Good point john, so surely then to include labour on that we must be talking £20+ per hole?

 

[Spare Tool]

:drool5:Would scribing the hole and diving in the middle across at various points with an angle grinder n nippers work?

 

[John Benton]

Good point john, so surely then to include labour on that we must be talking £20+ per hole?

It's all relative Andy. Depends how much you pay for the core drill and how many holes you can get out of the drill. I've got a 50mm core bit from ATS and never had to replace it yet, must have had 15 holes out of it, mixture of ceramic and porc. At £10 per hole it's a tool that's earning me money not costing me

Not as expensive as you may think and I find the bigger, the bit the longer it lasts, only get 3-4 holes out of 6-8mm bits

http://www.atsdiamondtools.co.uk/node/12

 

[cam_low]

ats ones are faultless

 

[andy8758]

:drool5:Would scribing the hole and diving in the middle across at various points with an angle grinder n nippers work?

Yes.

I was taught that by tilers on a building site. Its possible to make a very tidy hole using an angle grinder, pin hammer and parrot nibbler (mark hole front and back of tile, angle grind back of tile to remove biscuit close to front surface, use a pin hammer on front at centre of hole to start breaking tile, and nibble when near edges).

Disadvantage - grinder weakens tile around the hole - pack edge of tile with adhesive when fixing.

 

[radim]

get a corer...

 

[Dash J]

Use whatever sized hole saw you have to make a hole then snip the rest out either with snips or parrot snips,I done 20 70mm holes last month,never had a problem

 

[Just Rizzle]

angle grinder & ball hammer and parrot nippers is all i ever use for holes over 18 mm
used this method for 30 yrs

 

[Concrete guy]

We'll be back in stock of these in about a week. We had a retail customer buy our entire stock of these to resell due to the popularity of the down lighters in this size.

 

[Spare Tool]

It's all relative Andy. Depends how much you pay for the core drill and how many holes you can get out of the drill. I've got a 50mm core bit from ATS and never had to replace it yet, must have had 15 holes out of it, mixture of ceramic and porc. At £10 per hole it's a tool that's earning me money not costing me

Not as expensive as you may think and I find the bigger, the bit the longer it lasts, only get 3-4 holes out of 6-8mm bits

http://www.atsdiamondtools.co.uk/node/12

I like the idea of an investment that's yielding at least a 300% margin, your in the wrong job John...should have been a banker :smilewinkgrin: not many tools in my van that'll pay for themselves and then some..
Notice ATS been on and can't wait for them to get some stock in as gonna need drill bit by weds, tempted on the 365 but nobody bigging them up like the ATS bits...
The guide that comes with the 365 is that just to get you going then remove and use a water feed kit? Sure they wont last long dry??