Not a great day for the build.

Forgot to support the underside in trem spring cavity area when knocking the post insert in.



Rude words were said very loudly.

Insert measured 9.8mm over the splines, hole size was 9.5mm, so it should have only been the splines pushing into the wood.

Epoxy stuffed into the crack and clamped. It's all gone back together, but the test will come when the insert goes back in (to be pressed in next time with a large G-clamp and fully supported).