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08-15-2011, 01:30 PM #1Senior Member
- Join Date
- Aug 2008
- Location
- Cottage Grove, MN
- Posts
- 780
Tips for boring out 3/4" drain thru-hull to fit a 1" thru-hull
I currently have 1" drain lines on my rear bags but still have the 3/4 in thru-hulls. I have two questions that I'm pondering: 1) how to enlarge the hole to accept the 1" thru-hull. Since there's already a hole there, the pilot bit for a hole saw has nothing to guide it. 2) It is currently 3/4" for only 6 inches right at the fitting itself. Is this really restricting flow significantly?
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