Use masking tape first, then put the duct tape over it. The duct tape is tough enough to survive the blasting, masking tape underneath helps you get it off the frame MUCH easier. There are special tapes for this use though.

I believe most people are recommending other forms of media blasting, like plastic and walnut instead of sand these days.

If the whole thing is chrome under paint, make sure you read up and/or find someone experienced with getting it to stick well.