2Describe the relevant sources and methods for obtaining any required technical information relevant to the model being produced (such as drawing briefs, specification sheets, request for changes or modifications to models; technical information such as limits and fits, contraction allowances, bearing selection, surface finish).
3Drawing briefsInstructions stating which part(s) of an assembly should be drawn as engineering drawings.It will state the following:size of the drawings required1st or 3rd angle orthographic projectionhow many copies requiredfile format required
4Specification sheets These sheets are documents such as: British StandardsCompany standardsCustomer requirementsThey may contain information such as:Manufacturing processesMaterials to be used
5Request for changes or modifications to models These are documents that instigate a change being made to a model or drawing.This document also acts as a change notification to inform all personnel, from estimating and sales through to manufacturing, that a change has been made.
6Technical information such as limits and fits, contraction allowances, bearing selection, surface finishThis information is located in documents or books such as:British StandardsZeus BooksEngineers HandbooksIt tells you nationally and internationally recognised standards to work to, rather than creating your own.It saves time by giving you information in tables, rather than you needing to calculate it yourself.
8Technical information may be obtained from sources such as: Drawing brief…. manufacturing info/material/finish/dimensionsSpecification sheets.… manufacturer/designerChange or modification requests…. List changes required to specification or an engineering drawing.Technical information including:Limits and fits…. Zeus books, internet, Mechanical Engineers reference booksContraction allowances…. Mechanical Engineers reference books, internetBearing selection…. manufacturers or supplier cataloguesSurface finish…. samples, measured by machines