I've made myself a little flat top, and I reckon I've got a problem with the top flexing too much. It's still early days, but it needs to go through the strings twice to get them back in tune from overnight, and it seems to require more movement on the keys than I expect. The construction is unconventional, but I'm pretty secure about the neck and body, which involves a lot of carbon fibre, but less so about the top. It's spruce with a small brace under the bridge right across the body, and due to a disaster with stains I sanded it down, so its relatively thin.
What principally disturbs me is that the pitch changes if I press down with a single finger on the bridge. Im away from home and haven't anything else to compare. It wouldn't be a disaster to put a replacement top with more bracing on, but equally I'd like to be sure I'm looking at the correct problem. Any thoughts?
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