Celebrating its 50th anniversary, Cambridge Open Studios – which boasts a thriving community of more than 500 artists – unveils its biggest and best festival yet this year and the Cambridge Independent is proud to support it. Artists working in specialisms from ceramics and glass art to woodwork and photography, will open their studios each weekend of July, and we talked to a number of them. Glass maker Iain Smith When retirement beckoned and his wife was busy with her work as a successful author, engineer Iain Smith knew he needed to find a new hobby to fill up his hours, writes Alex Spencer….