Raycotechnologies

Hot water storage systems

Loads of information on the essentials of having a large hot water storage system, capable of delivering several days of heat and domestic hot water. 

Rayco Yacht Service
25 years experience installing marine systems. Marine electrician, refrigeration, air conditioning, wood working.  

Canoe & Kayak model Kits

Affordable, detailed, easy to build wood strip canoe & kayak model kits. Six models to choose from. Basic wood working skills all that's needed 

Round Concrete House

All the exciting details of energy efficient , disaster resistant home , designed to use the minimal of energy .  Full details with photos of construction.

Scrimshaw on swordfish bills

Rare actual swordfish bills caught in the Atlantic back when fish were plentiful, made in to works of art.

DC refrigeration

Full details on making a DC refrigeration system for the energy conscious home or boat

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