Coin Holder
Version 1
This is a coin holder designed for €2, €1, and 50c coins. It can fit up to 6 coins of each type (before it starts becoming hard to use).
The springs used are 30mm in length, 12mm in outer diameter, and 0.7mm wire diameter.
If you plan to use it in a car, it is recommended to print it from a heat resistant plastic like ABS.
Print settings
For ABS:
Initial Layer Height: 0.2mm
Layer Height: 0.1mm
Wall Count: 5
Infill: 20%
Infill Pattern: Grid
Rafts: No
Supports: No
Cooling: Off
Print Speed: 90mm/s
To remove white marks on the bottom surfaces of the parts, try heating them up.
Assembly instructions
The pistons have an inner circle on their lower side. Apply some epoxy to the inside perimeter of that circle and press the spring into place (it should be a tight fit).
Wait for the epoxy to dry.
Apply some epoxy to the top side of the main part's indentations.
Insert each piston (with its spring) into its correct cylinder. Each piston (except the €2 one) has the corresponding coin's value printed on its lower side.
Align the top part's teeth with the main part's indentations and press them together. Use a vice to ensure that they are fully inserted and to keep them together until the epoxy dries.
Wait for the epoxy to dry before using it.
