funny part about this build is, when i laminated the maple to the walnut after drilling the 2 in hole, I had a brain fart and forgot to put the weights in!!? so, i drilled two holes in the other sideand grabbed one of the good kitchen frying pans ( wife loves it when everything ends up in the shop!). Got some old fishing weights and a blowtorch, melted em up and poured it in. worked out great, a very heavy mallet with no rattling of any kind. Sometimes the brain farts end up smelling really good!