HIV Prevention in Ghana: Research Into Practical Methods: Spring Break Report

I've noticed the double vend issue is persistent occasionally, particularly with very thin packaged condoms and even more so when a section of the inventory is all thin condoms. I think that further reducing the height of the aforementioned face slot by another increment will clean this up more. I've redesigned the inventory chute with thicker plywood and the inventory height adjustment, and a few other minor details.

I've also redesigned the case to reflect a coin mechanism location, and reduced overall dimensions -- (190mm W, 475mm H, 155mm D) compared to (275mm W, 500mm H, 120mm D) for the current model -- 50.8% volumetric.

This also has reduced the amount of sheet metal required from 8 sqft. to just over 3.5 sqft. This of course isn't free, the new model incorporates 3 sqft of plywood which was not included in the previous design. However, this version 0.3 is also weld- and machine-screw free, incredibly. This eliminates welding equipment from the assembly requirements, as well as specialized hardware. These joints have been replaced or redesigned to incorporate tapered thread screws -- think wood screws, or drywall screws -- that's the thing, they're very interchangeable and far more common.

I've uploaded a copy of my working folder for this project, in the spirit of open source. The folder will be maintained at Google Drive, accessed (read- and download- only) at the following link. The data is provided under GNU FDL.

Current CAD models are in proprietary Solidworks format. I'm looking into options for exporting the data to a more friendly format, such as STL or another polygonal format. This does, however, preclude the end-user from practically modifying the design. There are open-source CAD formats available, I'll have to look further into those possibilities.