:Lathe chatter is a thing of beauty. I happen to be the president of the Society for the Preservation of Lathe Chatter, a non-profit tax exempt organization. I would prefer that all donations to this worthy cause be made through my personal paypal site. So remember...We musn't let lathe chatter fall victim to modern technology. So please.....give generously. (said on the verge of tears with sympathy music playing in the background)

The Old Stamp K's are less refined than most modern cymbals from a production standpoint. For instance, that "twist" you mention to is lathe chatter, and is now generally frowned upon by cymbal manufacturers. The Old K's and Old A's most likely have it because the cutting tools of the time did not hold a sharp edge like tungsten carbide or modern high speed steel cutting tools do. Personally, I find a little chatter interesting, and even appealing. I usually don't fight it, or try to fix it if it occurs. Sometimes, I even create it on purpose.Matt

[img]https://photos.imageevent.com/drumaholic/zildjianarticle/websize/20%20trans.jpg[/img]Fido is confused. He can't really tell if he's looking at lathe chatter or hammering.Can anyone help him out?

Those heavy cymbals are sold in matched pairs and are intended for use in marching bands and symphonic use, not for the drum kit. Of course, you can use whatever cymbals you prefer, and for whatever purpose you'd like. It occurs to me from your various comments in this and other threads that perhaps the sound of old K's that appeals to many of us is just not your cup of tea, and may not be appropriate choices for the type of music you play. They are not really well suited for hard rock, and the thin ones might possibly not survive a rock gig.