Total different animals. Not much in common. You could use the polymer clay to work out shape ideas but that's about where it ends. Polymer isn't hydration based so pull it out of the bag and you're on a timer and if it starts drying out you need to add water to keep it pliable and avoid cracking. Polymer you can take it out and come back 6 months later and still use it. Be great if you could but really nothing in common other than both are pliable like clay.
Ok, I'm a little confused.....Please see the picture below or attached picture and maybe we'll all understand. I have the metal clay kit on the right, should I purchase the left clay kit (valued about $35) to practice with? I do know that the metal clay,15 Grams ($49 or more), depending on where you get it and is more costly, so that's my reasoning for geting the cheap stuff until I know what I'm doing.
Again any and all thoughts and advice are welcomed! :)