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3D printing legalized coins

2021-12-17 10:38:39Source of article:EasyMFG

PRINTY is a 3D printing service company in Slovakia. Recently they received a somewhat special order, and the Presburg Mint commissioned them to 3D print a batch of pure silver coins.

coins printed by meta 3d printer
coins printed by meta 3d printer

It turned out that these coins were a batch of commemorative coins with complicated shapes on the surface, which made it difficult for the mint to mint them using traditional methods. In addition, since it is not currency in circulation, the amount of minting is not very large. If the mold is opened, the casting cost will be very high. Therefore, 3D printing has become the most ideal process.

coins printed by meta 3d printer
coins printed by meta 3d printer

It is understood that PRINTY chose the adhesive jet 3D printing process to print this batch of silver coins. At first they tried silver powder of 999 silver, but the actual effect was not good (no specific reason was given, speculation may be that the silver was too soft and deformed during the sintering process), so they switched to 925 silver. After the silver coin is printed out by spraying with adhesive, the adhesive is removed by sintering, and finally after polishing, the production of the silver coin is completed.

coins printed by meta 3d printer
coins printed by meta 3d printer

The Pressburg Mint stated that these commemorative coins will be issued in Tokelau and Niue.