The interpretation here must be correlated with the action and type of tool. If you dreamed of a band saw, the dream is telling you to persevere and you will win the approval you seek. A jigsaw portends the breakup of a romantic attachment; a buzz saw is a warning that you are endangering your reputation and/or credit through association with undesirable companions; a hacksaw predicts an increase in responsibility but with unexpected compensations; an ordinary handsaw indicates difficulties and obstacles to be overcome during a change which will ultimately be an advance.