how to make a ball detent
· If you must drill a blind hole, then you''ll have to deform the top of the hole, for instance, by pressing a large steel ball against it. You could, if you have sufficient room for a deep hole, make a detent plunger with a radius tip which you could harden up for wear. A plunger could then have a blind slot milled along its side for a small ...How springs is made - material, manufacture, making ...The most popular alloys include high-carbon (such as the music wire used for guitar strings), oil-tempered low-carbon, chrome silicon, chrome vanadium, and stainless steel. Other metals that are sometimes used to make springs are beryllium copper alloy, phosphor bronze, and titanium.