tetraodon Posted November 11, 2014 Share Posted November 11, 2014 im drilling a tank for an over flow, my question is how close can i drill holes? is there a set formula? i searched it out and cant find any helpful info Link to comment
jbb Posted November 11, 2014 Share Posted November 11, 2014 I believe the safe space Is 1.5" from edges & 1.5" between holes. Might wait for others to confirm that though Link to comment
knd107 Posted November 12, 2014 Share Posted November 12, 2014 I used a spacing of a diameter of the hole saw between holes. Link to comment
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