After design it is good practice to check if it covers basic drawing standards, so having a checklist is good is ideal: ## Drawing Checklist ### Part Drawing - Specify cavity no. location (if applicable) - Specify date stamp location (if applicable) - Check draft angles for moulding and casting components - Complete Drawing Template - Correct Material - Correct Title [include product descriptions, etc…] - Date drawn - Correct Sheet Scale displayed - Latest updated details as “drawn by” and “designed by” - Make sure all drawings are in 3rd angle projection - Check Revision Block - Tapped holes shown including tapping detail and tapping depth - Critical dimensions shown as specified by designer/engineer - Company logo on at least one visible part in the assembly - Cavity Numbers and Logo needs to state if detail is to be raised or sunken. - Correct Material to state its "grade" or "alloy”. - Revision Block to state past and present info (e.g. what dimension was and what is now). ### Assembly Drawing - Check BOM and ensure numbers matches with BALLON Annotations - Specify Grease grade, quantity of grease and surface required - Specify Loctite grade, quantity and location - Title includes product no. and applicable project numbers - In BOM include kitting information if it is supplied in pack. - Packaging details specified - If a "Newton Metre" or "Torque" requirement is needed, this should be shown on the assembly drawing. ### Drafting Checklist Things to Consider - All units are assumed to be mm. - Dimension lines should never cross other dimension lines. - Dimension lines should avoid crossing extension lines. - - Extension lines may cross each other. - - Longer dimensions should be placed further to the outside. (to avoid crossing). - Try to avoid long extension lines. - Dimensions should not be duplicated, or the same information given in two different ways, and no dimensions should be given except those needed to produce or inspect the part. - Dimensions should be placed in the views where the features dimensioned are shown in true shape. This may require auxiliary views. (i.e. Dimension only to true lengths). - Notes should always be lettered horizontally on the drawing. - Make sure drawings are checked. ### Tips - Create dimensions from datum point, like bearing, dowel holes or center line instead of curved surfaces. - Spreading out views on sheet is cleaner than squeezing in.o   Specify Geometric Tolerances on sheet metal and machined parts as required. - A dimension should be attached to only one view: extension lines should not connect two views. - Notes should always be lettered horizontally on the drawing.o   Avoid dimensioning to hidden lines. - Avoid a complete chain of detail dimensions; better to omit one.  - - Otherwise, add REF (reference) of brackets to one detail dimension, or to the overall dimension. This allows tolerances to determine the omitted dimension. - Dimension lines should be spaced uniformly throughout the drawing. Approx. 10mm from the object, and 6mm apart. - Dimension figures should be approximately centred between the arrowheads if possible.o   No dimensions unless absolutely necessary. - No hidden detail unless absolutely necessary. - Keep number of views (projections) to a minimum.  - - Three views are normal, the maximum (6 views) are extremely rare. - Add centre lines and cross-hairs to holes.