In our experience, legacy drawings fall into two camps: either easy or complicated and difficult. What makes it easy? Few dimensions and the design clearly showed and complete. What makes it difficult? For example, numerous dimensions requiring the knowledge of drawing conventions, poor copy and missing dimensions and features. It would be a lie to say that 3D Engineers has every answer, but, having converted over a thousand historical drawings, our skill is proven. Additionally, necessity means we have methods within our toolbox to reveal features within a drawing that most objective opinions would class as lost. Furthermore, by leveraging what we have as opposed to moaning about what is not there, success can often be obtained from something considered a lost cause.