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Sept. 16, 2019, 2:12 a.m. -  Karl Fitzpatrick

Capillary action will be cancelled out with a hole diameter of at least 5-6mm. I've never done it myself (drilled a hole that is) but I do spray the insides of my steel frame with CRC Lanocote once a year. The bottom bracket might get wet but it's still as shiny as the day i got it...

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