Emergency Cash Capsule (parametric)

thingiverse

I appreciated both Pahchay's Emergency Cash Keychain (https://www.thingiverse.com/thing:2797977) and I_need_a_better_name's Emergency Cash Capsule (https://www.thingiverse.com/thing:3087577). I enjoyed that I_need_a_better_name's was completely closed, and printed it successfully. It functioned well (although I broke it as a test). I decided to create one with thinner walls and no thick bottom. I wasn't certain exactly what dimensions would work, so I made a parametric model. The wall and base thickness, the cavity height, the breakpoint thickness, etc are all easily adjustable. I accomplished this using FreeCAD and CadQuery (https://github.com/dcowden/cadquery or https://github.com/CadQuery/cadquery). This means it should be easy to adapt to bills of various sizes (such as Euros). I ended up experimenting with the dimensions to get one that didn't attempt to put infill in the walls, but instead had solid walls of the right thickness. It is still plenty strong, but easily breakable. The model here was printed at 0.2 layer height, 0.4 line thickness and 100% infill. The infill is only at the very top, and it actually prints faster at 100% than it did at lower percentages due to smoother movements (at least for me). Edit - I guess I should mention, you need to add a "pause at height" or equivalent in your slicer before the top closes so that you can insert the money.