Can dot peen machines mark on hard or curved surfaces? Yes. Datamark systems can mark metals up to 62 HRC and can handle slightly curved or uneven surfaces with consistent marking quality. By 188879pwpadmin|2025-06-25T15:51:33+00:00June 25, 2025|Dot Peen Marking Machines|Comments Off on Can dot peen machines mark on hard or curved surfaces?