Supermarket ring
prusaprinters
<p>In Israel, a five-shekel coin is used to free supermarket carts,</p><p>The diameter of such a coin is 24 millimeters and its thickness is 2.4 millimeters, I have no idea what is the case in other countries, but I assume that in other countries there is a coin of the same size</p><p>The ring is a minimalist way to make sure we always have how to take a cart in the supermarket its printing time is short, convenient to store it in a wallet and convenient to put it on the finger if it is not convenient to open the wallet straight when returning the supermarket cart</p><p>The diameter of the inner ring is 17 millimeters I have attached a SolidWorks file so you can fit for your finger and your coin </p>
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