Bathtub cut open on Reddit reveals a cardboard honeycomb core inside its fiberglass shell
A Reddit photo shows a bathtub with a cardboard honeycomb core, a sandwich-panel trick that stiffens thin fiberglass shells while keeping them light.
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A Reddit photo shows a bathtub with a cardboard honeycomb core, a sandwich-panel trick that stiffens thin fiberglass shells while keeping them light.
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