Developing the design and planning

You need to refine and develop one of your design ideas into your final Design Proposal. This could be one or two slides of quick development sketching to present your final idea of what you will do. This could be small details, joining methods and consideration, colours, grip, materials selection etc. It would be ideal if (again) you can signpost how these changes are meeting your Specification clearly. This helps the examiner award you marks! 

You also need to add Planning with information about: the amount of time you think it will take you to make your final 'tooling board'  model, print / make your Design Proposal and finish it to a high standard; what Resources (machines, tools, consumables etc.) you will need to create your Design Proposal; Cost (approx.) of your Design Proposal. You could present this just on an individual slide or you could have a final Design Proposal image surrounded by the relevant information listed above. 

The most common method is to use scheduling tools such as Flow Charts and / or Gantt Charts that show the amount of time and resources needed.

Select your chosen idea and then quickly further develop any details to improve the design. Then you should make a quick, final foam / modelling / Tooling (Ureal) board model accurately (right size, scale etc. and with a high quality finish). 

Tooling board (Ureal) can be cut, sanded, turned, sprayed, filed, smoothed etc. to create an excellent quality aesthetic model. You need to take lots of photographs of you making this model and include these on your slides, and you will use it for the next section also. This could be two or three slides.

You should use your Tooling board final model for measurements and to help you model in 3D CAD. You should take photos of you (or your client) interacting with your final model to help evaluate; match the Specification and Test the design proposal. 

CAIE want to see final models and outcomes that ideally (for them) are not entirely 3D Printed / laser cut, but show evidence and skill of making. Therefore, the making of a final tooling board model is vital to ensure that you access these marks for making.

You should start to accurately Reverse Engineer and 3D CAD model your chosen Design Proposal in Onshape. You should include screenshots of your CAD progress. Insert your images onto your slides with brief explanations of what you have done and why. You do not have to go into much detail in your explanations.

You need to create Slides that show accurate Working Drawings from Onshape containing 'sufficient detail for a skilled person to make your design proposal'. 

This means you need to include lots of dimensions for your working drawing(s), along with material selection. We would strongly recommend to include an Exploded working drawing (including the original product) to show how the parts fit together. Ideally you should also create a BOM drawing.

You could also add Section Views to your working drawing which would show thickness of materials. 

See below for videos on how to create Working Drawings.

You should create a copy of your Design Specification and paste it into a new slide and then show how your developed design proposal meets the criteria (bullet points) you have stated. You could do this with colour coding; a tick list + for Yes or X for No; or you could present a table with your Design Specification in and then rate (1-10) how well your design meets the specification.

Cutting list

 Cutting List example (ignore the title)

Your Prototype should be a functional model built to test your idea. This will most likely be 3D printed from your CAD model.