Anonymous ID: b5f012 April 17, 2018, 9:26 p.m. No.1086137   🗄️.is 🔗kun   >>6156

LCF failures show Luders lines along the fracture surface. Easily visible; don't even need a 10x loupe. Engine mafia slang is beach marks, because they sorta look like multiple high tide lines on a beach.