I am going to make a railgun. This is part of the rail system and still in design stage. This rail system made from 4 16mm hexagon stainless steel bar and fixed by M3 screw by pairs. This thing as a clamp to hold the rail and the diameter can be vary by adjusting the angle. The projectile diameter can be 14mm to 30mm. The power source is a 450V 1000uF capacitor that can store about 100J of energy. The velocity of projectile hope to reach speed of sound (333m/s). 2013-8-26 upate: Cap. bank increased to 12000uF and can store about 1.2kJ of energy. Welcome to my fan page: http://www.facebook.com/dickchoworkshop