Mekanism Fusion Reactor: Lasers, Fuel, Construction and Ignition
The recent Mekanism update added the Incredibly awesome Fusion Reactor that creates up to Millions of RF per tick and here the tutorial on how to build it. It requires D-T fuel to run and needs about 400 million RF in a Mekanism Laser Amplifier. You'll need to build 2 Solar Evaporator Plants and bunch of machines like an Electrolytic Separator, Chemical Infuser, Solar Neutron Activator, Rotary Condensentrator and more to turn brine in to Lithium and then Tritium or heavy water in to Deuterium to create D-T fuel.
Fuel: 0:58 Building the reactor: 10:25 Igniting the reactor with lasers: 14:27