Brian,
I have been reading and listening to your posts at length, and though some are with merit, most are not. By your own admission you have stated that you are new to the art of rigging.
So, with that statement alone, lets tap. Yes, lets tap a .158 mast wall with, say, a 10-24 screw. Why even tap, lets use a sheet metal screw. Simple enough. 13/64 bit and a #10 screw...why even tap!? Now, lets fasten a halyard restrainer. Any make you like. Shaeffer, Harken, a good old fashioned ring and plate. Okay now, lets add for corrosion effects that will, invariably take hold. Even better, lets look at the angularity of the loads of a simple halyard restrainer...Bah.
One must take care in the material of the mast before pre disposing on a method for fastening...
Courses in Materials Science and Strength and a few in Physics, then throw in some Numerical Methods and you might begin to see. In some cases one is warranted over another. In either case.
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Originally Posted by Brian Duff
Why use rivits at all ? Drill and Tap !
Also some blind rivits are sold as Stainless Steel or Monel but have steel mandrils, dont use those as the old rivit maindrils often end up trapped inside the spar to rust away, adding even more galvanic variety in the bildge.
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