Cutting into a cast iron soil stack

[Paul Cockhill]

Hi
Any ideas on the quickest and best way of cutting into a cast iron soil stack. I know it is going to take a while but have never done it before and have been told it will take a while. So would like advice on the best tools and best way to do it.

Many thanks

Paul

 

[bassmonster]

I think an angle grinder would be your best bet.

 

[Riley]

I tend to use a grinder cutting out in sections ensuring that the weight above is well supported. Also make sure that as little as possible goes down the lower section to avoid blockage. Finally ensure you have something sturdy to stand on also as my mates grinder nearly yanked him off a ladder when it caught on the pipe

 

[oz-plumber]

Cast Iron pipe cutters.

If you don't own a set - see if you can loan, borrow or steal a set.
No mess, no grinding and a clean cut.

 

[chris watkins]

[DLMURL]https://www.speedyservices.com/17_0181-h-pipe-cutter-cast-iron-12in[/DLMURL]
Hire a set !!
Safe way to cut it.
Take links out & will cut 3,3.5,4 & 6"

 

[Ermintrude]

What size you cutting in? I would use. Mc alpine adaptor if it's under 50mm

 

[turnpin]

Looking at original post I think he wants to cut into the cast not cut it out I use a starrrett cutter on slow speed no oil or cutting compound only water sprayed on whilst cutting...regards Turnpin:smile5:

 

[Reg Man]

RIDGID cast chain cutter, wish I had not sold mine, but never likely to use one again as I push pens and keys mainly now.

 

[Paul Cockhill]

Hi

thanks for your help. I need to cut a hole in the pipe to fit an inch and a quarter pipe. Is there a specific drill bit for this

Paul

 

[chris watkins]

Hi Paul
4"/110mm x 1¼" Pipe Mechanical Cast Iron Soil Pipe Boss Connector (Black) - Boss Connectors - Waste Pipe & Fittings | McAlpine Plumbing Products
Which I think Ermi was suggesting, as far as hole saw see post 7 from Turpin. Good luck & take it slow when using it & hope to god you do not hit a lump of silisus.

 

[Chalked]

Hi

thanks for your help. I need to cut a hole in the pipe to fit an inch and a quarter pipe. Is there a specific drill bit for this

Paul

use a starrett hole cutter with some cutting oil.

 

[gasmanrob]

Lenox bi metal hole saw with rigid cutting compound sprayed on every 30 seconds

 

[Paul Cockhill]

Thanks Chris, looks ideal. But what is a lump of silisus??

 

[Kyle87]

I put a 54mm (ish) holesaw through a cast stack the other day.

With an erbauer scukux special holesaw.

Slowish speed plenty of oil (I only had wd40 on me and not a decent cutting oil)

And hey presto.

 

[Kyle87]

Easy peasy

 

[chris watkins]

What came after ? pushed in 50mm S/W & lots of silicone ?

 

[Kyle87]

Mcalpine mechanical boss

 

[Kyle87]

And no silicone!!

 

[Ermintrude]

I used to use the botch quick release ones. No longer ! As I drilled through it quickly released itself down the stack !