A shop that already owns a carbide-blade saw and a routing tool turns out returns, corners and boxes in ACP with no new investment — the composite's sharp fold replaces assemblies and angle trims. The same work in HPL goes through assembly sections and more table time.
Conversely, a project that demands an in-mass wood decor, a thicker panel or HPL-specific characteristics gets specified in HPL — and the shop adjusts. The right reflex is to identify the job's most repeated operation (cutting? folding? assembling?) and pick the panel that makes that operation fast. For most residential façades and signs, it's folding — ACP territory.
