A printed sandal substrate sized from a tracing of your own foot.
3D Printed Shoes by Open-Source-Imports
https://thediyjunky.com/@open-source-imports/3d-printed-shoes
Licence: CC-BY-SA-3.0
Adapted from: https://www.appropedia.org/3D_printed_shoes
Original author: User:Sjhelmin
Original licence: CC-BY-SA-3.0

| Spec | Value |
|---|---|
| Print time | about 3 hours per substrate at 20% fill |
| Strap holes | 5/32 inch diameter |
| Source model size | US men's size 8 |
A shoe printed from a parametric OpenSCAD model, sized from measurements taken off a tracing of your own foot, with bungee cord straps.
| Part | Size / spec | Qty | Unit cost |
|---|---|---|---|
| PLA plastic or similar | 1.7 mm diameter | 1 kg | $22.50 ^[Source cites $22.50 for 1 kg] |
| Bungee cord | 4 mm diameter, 75 ft pack | 1 pack | $5.73 ^[Source cites $5.73 for 75 feet] |
Required total: $28.23

Tracing your foot.
Place your bare foot on a piece of paper. Trace the outline of your foot on the paper.

Take the trace of your foot and measure the length of your foot and the cross-section at several points. Allow about 20 minutes.
In OpenSCAD change the dimensions regarding the cross-section measurements and the distances between cross-sections.
Once the scad is complete, export to .stl
Open the .stl file using Cura and slice it for your printer.
Save the G-code and open with printer controller.

Begin the print. Printing of the shoe substrate will be approximately 3 hours per substrate at 20% fill.
Once printed, 4 holes of 5/32 inch diameter will need to be drilled on each side of the strap supports.

Take the 4 mm diameter bungee cord and tie a double knot on one side.

Thread the rest of the holes with the bungee cord. Once complete, tie a knot and cut off the remaining bungee cord.
Take the remaining bungee cord and tie a knot in one of the ends.

Begin in one of the bottom holes of the ankle support and thread the hole, pulling until the knot hits the substrate.

Make a loop that will go around the ankle, return to the hole on the other side of the ankle support, and thread it.

Take the bungee cord and thread the hole directly above the current hole and create another loop ending with a knot.