Dude, set mining with a short stack (or against short stacks) is complete nonsense. This play needs big implied odds to be profitable, and the only way you get big implied odds is to play with (and against) a full stack (about 100bb is OK, don't play much deeper until you get good postflop experience).

As a rule of thumb, never call a raise preflop to set mine that is more than 8-10% of your stack (or the stack of your opponent is it is smaller than yours). You can always call if the raise is less than 4-5% of the effective stacks. In between, it depends on your hand, your position, your opponent, etc