Finally we come to the part to talk about Salt or Pepper dispensing and how to go about making that. The simplest soluton is to find some sort of 'plug' which can be found in some medication bottles, e.g. the PiPa Gao bottle (in Chinese 枇杷膏). That can go to the bottom part. The top part is another similar acrylic strip with tiny drilled holes for 'dispensing'.
Measuring the diameter of the 'plug' will lead you to the width of the bottom 'plug' acrylic strip. After explaining the rationales about giving allowances from the drilled hole to the edge of the acrylic, the width of the bottom 'plug' acrylic strip is quickly worked out.
The rest of the dimenions on the hour-glass body is left to Angeline to work out on her own.
That was one happy successful consultation session. Angeline was able to show her understanding from the discussion and this is possible because she had already been working on the processes of making for some time. A lot of thoughts were evident through her design journal especially at the refinement phase. The details of measurements and how a single acrylic sheet could be subdivided to maximize material usage, etc is impressive for a 13 year old.
My job was to help her refine and shorten the processes by introducing alternative techniques and approaches that she might not have thought of. Sometimes radically changing the processes.
In the end, Angeline still got to make a decision on the final processes.
Those were my drawings all right... but Angeline would need to bring that home, recall our discussions and come out of her own version.
That's quite a challenge. But I believe with Angeline's keen attitude, the Hour-Glass Salt & Pepper Holder will surely turn out just as designed.