Holy Grail Project - Re-Usable Collapsible Cup from Sustainable Materials

Step 3 Template for fold lines

In order to achieve the fold pattern of the cup around the cylindrical section, a template must first be made. I have supplied an image below that can be scaled to create a cup of any size, sourced from http://www2.eng.cam.ac.uk/~sdg/dstruct/cylinders.html. This page is also fairly compulsory reading at this stage.

Without going into too much detail of the design process, the idea was initially inspired by research done, in part, into collapsing cylindrical structures by Taketoshi Nojima (you may be interested in his paper: Modelling of Folding Patterns in Flat Membranes and Cylinders by Origami).

If you take this template and use a photocopier or printer to scale it to 22cm high (top line to bottom), then you will have a template of the exact same size as mine. Alternatively, you may wish to scale down the whole cup - it's a relatively simple operation. Whatever you do, print it out, or draw it on paper with your dark marker.

Comments

[shadowkiller]

 Just to say, using this pattern exactly will make a 7 sided cup, which is too hard to fold and make a top for. I took off one row from my template so I end up with a six sided cup. Anyways, great instructable. 

[shadowkiller]

 also, taking two of these and taping them together, could make a longer cup.