Looking for a new hobby? Part 1 how to rhinestone/bedazzle 101: all about rhinestones. Flatback- the rhinestones have a FLAT BACK on one side for easy placement. What is hotfix? These are rhinestones which already have glue on them that are activated by a heat tool. These are most often used in textiles or dance costumes. Non-hotfix or Glue-Fix is where you apply glue directly to the item in order for it to bond. Here is a price comparison for different types of stones: For 1 gross (a pack of 14