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Thanks, that’s a great suggestion. Hadn’t considered anything like that.
What size diameter drill bit would be best? How far along from the crack?
Is the idea that if the crack does get worse, it propagates towards the hole then hopefully stops there?
TotalShanner-
Is the idea that if the crack does get worse, it propagates towards the hole then hopefully stops there?
No, you want the end of the existing crack to be within the diameter of the hole. Typically, people centre the drill on the end of the crack, but you don't need to worry about nailing it precisely. I'd probably drill it min. 3mm/⅛" up to 5mm/3/16"
gbj_tester
I'd be inclined to drill a stop hole