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Step 9The Cap
The last piece of the cup is the cap that allows it to seal, whether flat, or extended and filled. Having access to a cost-price objet rapid prototyper machine at uni, and an impending deadline, I bit the bullet and had this part printed (it might also have been because it looked really cool, and I wanted to test it).
I fully realise that it's hard to find facilities that do this, and probably expensive (mine was AU$7.80 at cost price, which is about a 5th of what a company would charge), so I would suggest that you turn it out of acrylic rod on a metal or hobby lathe - not particularly hard, given the simple shape. Either way, let me know, and I can e-mail out a dimensioned CAD file for a range of programs.
One particular advantage of the rapid prototyped part is that when I refine the project into a commercial product, the cap could easily have personalised embossing, specified by the individual buyer or corporate reseller.
I fully realise that it's hard to find facilities that do this, and probably expensive (mine was AU$7.80 at cost price, which is about a 5th of what a company would charge), so I would suggest that you turn it out of acrylic rod on a metal or hobby lathe - not particularly hard, given the simple shape. Either way, let me know, and I can e-mail out a dimensioned CAD file for a range of programs.
One particular advantage of the rapid prototyped part is that when I refine the project into a commercial product, the cap could easily have personalised embossing, specified by the individual buyer or corporate reseller.
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