I know this is a pretty old thread, but I recently decided I wanted to modify a couple broken cymbals I had. I am currently in the middle of doing a 20'' A custom crash and a 11'' K custom splash. I am using a Dremel tool i bought from Home Depot, That thing is amazing, I was gonna do the tin snip method others were using, but this seemed way more logical.
The crash had a ton of cracks and missing chunks so I cut it down pretty far. Here is a before pic, and another pic of the current stage I am at with it.
Here is phase 2 of the project. Right now it has a really low bell sound, because its so thick, I wish I had a lathe so I could thin it out a bit and get a splashier sound, but since i dont, Im gonna cut it down more leaving about an inch or so from the bell. Hopefully it will give it a higher pitch. This one still has a ways to go.
Now here is a before of the K custom splash. It had some serious damage from years of playing that thing. I loved that splash haha.
Here it is in phase 2. I dont have too much more left to do to this one, I have sanded down the finish since this pic and am gonna polish it up with the buffer on my dremel tool. I am really happy with the way this one is coming, it has a relly nice high bell sound, similar to a zil bell.
I will post more pics and some video when they are finished. I am loving this project and i plan on doing many more.