The white artist's tape that I have is too tacky to use for masking. I only use it to matt photos.
Whenever I mask for painting, I use Drafting tape by a company called Alvin. Its very thin, doesn't leave a paint ridge, and is safe on Alcad II metallics. A 3/4" x 30' roll costs $3 or less. I don't use anything else, myself.
Hope this helps.