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Excellent! Thanks, I'll give this a go.

Ive scrapped back the paint and cleaned it and its defo copper. What is best way to measure to confirm its 22 or 3/4?

Thanks all! Is it hard to distinguish between 22mm copper and 3/4"? What is this older pipe made out of?

Thanks, great breakdown!

Hi all, Have got a seized stop cock which needs swapping out. Main stop cock also seized and access is a problem for utility company so they will take a long time to do the job. I can pre fabricate the stop cock with copper and 22mm JG pushfit elbow..cut pipe live and quickly push it and then...

Yup when doing mine with a makita sds drill it did jam but the clutch kicked in and stopped the drill rotating.

I ended up going for the 2nd hole as although i could get both pipes in, it was too tight to manipulate the 2nd pipe to its final destination. Luckily its through an internal wall (in the void of a false ceiling) so i'll put pipe insulation around it and that will be the hole filled out nicely.

Thanks. They are flow and return central heating pipes. Probably make sense to do another hole then and put the insulation around it like you say. Cheers

Hi, Have made a 52mm core hole through an 8 inch brick wall. I want to run 2 * 22mm barrier pipe through it. I can get both to fit it, but the thought crossed my mind whether there needs to be a certain minimum gap between them? With both pipes in the hole its pretty tight. I would rather...

I bought the set with 3 different core holes. Comes with arbour and extension as well for £70.

So the chain drilling helped a lot I think. 30 mins later and I cored through the remaining with relative ease. Got about 5 holes all the way through before I couldnt do anymore as the bit kept slipping back into the holes close by. But all in all worked pretty good. Cheers all!

Thanks will try chain drilling to help it along. Im not running the drill on full power, keeping the revs pretty low. Maybe ill try with my 18v cordless then? At least that way can control the speed better.

No..is that good practice?

Yup 2 inch core is out.

Still good, can see plenty of diamond on it.

Using an sds makita, not set on hammer action, just normal drill setting. Its a brand new bit, erbaur.

Doing a core hole with diamond core bit, 52mm. Going through 8" of solid brick. Been at it for an hour and only about 2 inches through. At what point do you give up and put in a chisel bit and smash through? Do most trades just carry on until completion, or they call it off after a certain point?

Yes it will have a shower. Great, good advise i will look at a ducted fan and have it come on with light.

Thanks..Ok I see what you mean..cutting out the section of wood section should give enough space to make the core hole. Its brick work outside as well as on the inside. I'll give it a go with a core drill and hopefully make it through! Cheers

Would it not be too close to the concrete ceiling slab?