I did for about a fortnight
If you can go 2 months you've cracked it.
Discuss Large drill bits in the Plumbing Jobs | The Job-board area at PlumbersForums.net
I did for about a fortnight
i have got one 600 12 mm bit that can go in if i run out of depth then drill from other side
Reply to Large drill bits in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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