These videos show the details of exactly what I (and I suspect most of us here on LC) do to make our instruments. I might use different tools, but I do the same measuring and forming. Keep it up! and chip out sucks, when that happens to me I do one of two things 1) glue the chip out back in; or 2) turn the "mistake" into a "feature". In fact that's half of my design process. ha!