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Old 23-03-2006, 21:03   #1
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Skin Fittings in a Ferro Hull

I am currently fitting out a Hartley 32, and need to make some holes for skin fittings for head plumbing, as well as transducers for depth, log etc.

Colin Brooks' book has a method involving a series of small holes around the circumference of the hole to be made etc etc.

Has anyone had success with any alternative methods. I was tinking that a diamond tip core hole, like used in construction to cut through concrete slabs would work, be easier and neater.

Over to the brains trust.

Cheers

Steve

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Old 24-03-2006, 18:22   #2
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Go with the diamond hole saw.

If you can get a diamond tipped hole saw then go with it.
Making holes in well made ferro cement is a B#@%****.
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Old 26-03-2006, 02:07   #3
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I did just that about a month back. It makes a very tidy job.
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Old 27-03-2006, 00:25   #4
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Holes in Ferro Hull

Thanks guys;

Chris, your not wrong, have been fitting new teak around sheerline, and have had great difficulty in drilling through to be able to screw to timber beam inside boat. Used a combination of "find the old holes" and expoy adhesive and many clamps, including ratchet straps from the truck!

Alan, thank you for your comment confirming what I thought was a much cleaner, easier and quicker method.

Hope to be back in the water by mid year.

Cheers

Steve

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Old 27-03-2006, 02:15   #5
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I found you need two things. A good Electric Airhammer impact drill. The best battery one I have ever come across is the DeWalt 24V unit. And the second is a good masonary bit. The big DeWalt uses an SDS captivating system for the bits. Although the DeWalt bits are good, I use another one called.......??? Dang, can't remember the name, but they come in a blue labeled plastic case. Anyway, the bit ends will handle steel rienforcing mesh. Not sure if the would handle pipe if your boat used that in the frames.
I also use the smaller Diamond hole cutters for grinding out holes as well, If I needed a bigger skin fitting etc.
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