To discourage disassembly by curious toddlers, modern BRIO toys use screws with a triangular head. This is great for preventing accidents with your child, but not so friendly for you whether you are trying to repair something or are just curious what’s inside. The answer is to get the right tools for the job: triangular head screwdrivers, which you can find on Amazon and eBay. I’ve found that most of the BRIO screws are a TA23, but get an assortment to be safe.