LAK OÜ is a metalworking company, which has primarly consentrated on boat propeller repairs, production and development of racing propellers, boats and acccessories. LAK OÜ’s know-how in this field goes back decades, when Lembit Aaslav-Kaasik Snr first started working on propellers. My (Erik Aaslav-Kaasik) experience in this field already started with upbringing and since 2013 I have been commited to further developing propellers and other racing equipment. During the past few years, the production of propellers has been modernised by going from fully hand-made (welding,bending etc.) propellers to computer 3D modelled and foundry cast products. Meanwhile evolving racing propellers, we have found the optimal form for achieving maximal efficiency.