heat gun, sealing iron, trim saw(optional?), T pins or some sort of building board system, measuring device, square, mixing cups, mixing sticks, plan protector, and many others I'm sure. BUT ALL of the tools needed are well worth the joy of seeing the flying machine YOU built take off, fly, and land. JMO I will admit the stress is higher for me when I fly the plane I built than it is flying an ARF but it is still worth it to me