The document describes the "Machine M500" project which aims to develop a new energy efficient furnace to grow extra large sapphire crystals up to 500 kg. The project aims to reduce production costs by 3x and increase crystal size by 6x compared to existing technologies. This would allow expansion into new markets and applications. The project team has over $0.5 million invested so far and is seeking $3.3 million to complete design and development of a fully operational machine.