Abstract: An artificial insulated log that has outer and inner wood members that are glued to an inner core of rigid insulation. In addition to the glue, structural connectors are fitted on the top of the logs at specified intervals to provide additional structure support, Each of the wood pieces has a tongue and groove formed to receive other logs. In addition, the insulated core is also fitted with a tongue and groove for alignment. The outer, or exterior, wood member is curved to look like a natural log, The inner wood members are cut flat to for a flat interior wall. Formed corner logs can be used with regular logs to make a finished looking assembly for the building. The corners can be alternated or stacked, as desired.

Abstract: A projectile for a railgun that uses a hybrid armature and provides a seed block around part of the outer surface of the projectile to seed the hybrid plasma brush. In addition, the hybrid armature is continuously vaporized to replenish plasma in a plasma armature to provide a tandem armature and provides a unique ridge and groove to reduce plasama blowby.