Drive rivets, also known as hammer rivets, available from Lawson Products, are quite common on sailboats. Made of aluminum with a dome head they come in 3/16" and 1/4" diameters and in various lengths. This is a 3/16" #6, commonly used on masts and booms to attach fittings. Quite easy to install, just drill a 3/16" hole, insert rivet, and drive the pin down flush with the head (not further!) with a hammer. Tap the pin just hard enough to move it. If the pin mushrooms you need a longer rivet or you're hitting it too hard. |
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Removing the rivet without enlarging or distorting the hole is important, so the new rivet will fit well. I DON'T just pick up a 3/16" drill and try to hit the hole when drilling out the rivet. First I carefully grind off most of the head to make it a little easier to drive down the pin.
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Using a suitable sized punch I drive the pin down through the rivet part way. This gives me a 1/8" hole exactly in the center of the rivet. Keep the punch straight, here I'm just holding the punch for the picture and it's not straight.
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Using a 1/8" drill bit, I drill out the rest of the pin to complete the 1/8" pilot hole exactly in the middle of the rivet.
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Changing to a 3/16" drill bit and using the 1/8" hole for a pilot hole, it is now simple to drill out the rivet without damaging the original hole. On the right is the remainder of the rivet head.
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PLEASE look at this new site. It was sent to me by the owner 10-5-14. Seems to be excellent! Loyd's Rivet tool guide.
Bob DeRoeck offers this much faster way to remove a drive rivet.
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