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Discuss Best way to drill a hole in a cast iron soil pipe. in the Plumbing Tools area at PlumbersForums.net

moonlight

Plumbers Arms member
Plumber
Gas Engineer
Messages
948
Can anyone tell me what is the best way to drill a hole in a soil stack. What drill would be best.Its external. Thanks.
 
Last time I had to do it it was low down for a shower. I held an off cut of ply up against the house, resting on the floor , and cut through this first to use as a guide for the hole saw. Made it safer/easier and means you don’t need the pilot drill in your hole saw.
 
Tct hole saw
 
It's quite soft so hole-saw as above. Won't take a minute. Don't let the cut piece fall down the pipe.
 
It's quite soft so hole-saw as above. Won't take a minute. Don't let the cut piece fall down the pipe.

until you hit a hard spot then it’s a pain
 

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