Doing a proper job of riveting requires the right tools–a solid holding iron, and of course a well balanced riveting hammer of the right weight. 4oz. riveting hammers are not easy to find. We once produced our own in bronze, that is until the costs became prohibitive. That's the reason they have been missing from our online catalogue for so long. We were fortunate to come across these steel hammers, and they work beautifully, whether you are making down the 14-gauge rivets in the ribs of a lapstrake canoe or setting the 10-gauge rivets in the rail of a Matinisus Double Ender. The trick–if you choose to call it that–is to use many light taps to form the inboard end of the copper nail into a button atop the rove or burr. We polish the ball end of these hammers so that they will help you do just that, for less than half of what our previous bronze riveting hammers cost.