So I wonder if you guys could share some of the tools needed to start dyeing. I am only looking at doing black dyes.
Here's a link for the ink pens I've used (it's the 'degreaser-resistant ink' pens) http://www.mcmaster.com/#marking-pens/=839i1n
I've tried all the colors on all types of disc plastic and, hands down, black performs the best on the most types of plastic--leaving a matte finish on plastics like DX, Pro-D, S, Power, etc. while leaving a glossy finish on plasics like Champ, CE, Gummi, EvolutionHPP, Supreme and the best results being on Star and Goldline.
And here's the tape (the 'heat-resistant kapton tape w/silicone adhesive) http://www.mcmaster.com/#masking-tape/=839plf
Burnish your edges and you will get razor sharp results. the tape is slightly stretchy so it will conform to the curved surface of the disc without wrinkling. Plus, the adhesive is very forgiving if you don't press hard on it and can be re-positioned many times until you are satisfied with your lines, then can be pressed into place. Even if you want to go with the hot Rit bath, you will find no better tape to mask off with.
Good luck and have fun!
"When the power of love overcomes the love of power, the world will know peace." -- Jimi Hendrix