Back in my shop days, most workpieces were marked by using hardened steel stamps and a 2-lb. hammer. WHAM! That heavy-handed approach didn't cut it when the shop began supplying thin-walled aluminum brake sleeves to Boeing. We ordered a bunch of rubber stamps and gently rolled the part number in permanent ink around the sleeve's circumference. Quite often the ink would smear and we'd have to clean it with alcohol before trying again.
展开▼
