E
CRITERION E – DETAILED DEVELOPMENT OF A COMMERCIAL PRODUCT
NB: Criteria E and F will need to be completed in tandem. Criterion F aspect/strand (iii), the scale and volume of production, will affect the modelling in Criterion E aspect/strand (i), modification of the design prototype for commercial production, for example if the scale of production is mass/volume then most likely injection moulding could be the mode of production and plastic the material – therefore the design/prototype will need to be changed to include draft angles for the mould.
E (i) Develops the design, addressing the required modifications for a commercially viable production process.
Identify a scale of production for your product based a potential market .
State it and refer it to Criterion F.
Identify a type of commercial manufacturing/production method from a range of possibilities that could be viable for the chosen scale of production and match with the appropriate material
State it and refer it to Criterion F.
Drawings/modelling of ideas annotated to show the required modifications.
Develop your prototype incrementally by modelling and testing, through sketches, CAD, photographs, or physical modelling.
This may include a few revised specifications.
This is similar to aspect/strand from Criterion B (i) and (ii).
Annotations highlighting additional research and/or feedback enabling iterative development.
You may need to consider:
Changing wall thickness, reducing the number of components, (to) reduce unit cost of manufacture.
Assemblies, sub-assemblies,
How to create the same component, repeatedly, a number of times – leading to jigs, templates, moulds, etc.
Consider strategies such as DfM, DfMaterials, DfAssembly/disassembly, etc.
Adjusting the design/prototype such as draft angles for moulding (injection of others), CNC machining (lathe, router, milling etc), flat pack, modifying assembly, some redesign to accommodate components, interior of a product to accommodate electronics, etc.
Include any additional research you may have collected.
Other aspects to consider …
Annotations must be legible.
Students must not include any extended writing to address this strand.
The evidence for achievement against this strand should be presented in approximately five A4 pages or the equivalent.
E (ii) Presents the developed commercial product comprehensively.
A presentation drawing of the commercial product.
A complete set rendered 3D/CAD model.
Include annotations.
Annotation of the presentation drawing of the selected design highlighting the key modifications required for commercial production.
Annotations should include what you changed from the prototype.
This is similar to Criterion B, aspect/strand (iii).
Other aspects to consider …
Annotations must be legible.
Students must not include any extended writing to address this strand.
The evidence for achievement against this strand should be presented in approximately one A4 page or the equivalent.
E (iii) Develops an accurate design proposal of the commercial product in sufficient detail for a third party to manufacture the product.
The commercial product must be presented in sufficient detail for a third party to be able to interpret correctly.
Appropriate technical drawings with sufficient detail for commercial manufacture.
This includes a set (if appropriate) of, orthogonal, isometric, assembly and/or section drawings.
Include dimensions and any other information/instructions so it can be produced by a third party.
An assembly drawing.
This includes (if appropriate), assembly, exploded isometric and section drawings.
Label/number all components.
Include dimensions and any other information/instructions so it can be produced by a third party.
A bill of materials.
Include details such as part number, part name, sizes, materials, components, quantity, production method, finish, costings, etc.
In a table format.
Other aspects to consider …
Students must not include any extended writing to address this strand.
The evidence for achievement against this strand should be presented in approximately nine A4 pages or the equivalent.