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Step 2Make your stamp
Having a clean, crisp image of the rocket's structure atop the scratch off layer was an essential part of this design. I figured the best way for me to get that illustration on the cards was to make myself a stamp. I considered carving my own. I considered somehow etching one. In the end I decided to laser cut a mold and cast my stamp.
The process worked remarkably well. I laser cut a few silhouettes of the design to act as walls for my mold, and then etched a little panel with the illustration on it. Since the laser removes material to create the etch and is so incredibly precise it worked really well to create the detailed illustration in 3d relief. When I stacked the mold together and added a spray release it worked amazingly. If you're curious about mold making you might consider reading some of my other instructables.
The trick with all this was finding the right material for the stamp. After some trial and error with wax, hot glue, and rubbers as casting material I eventually found that a 2 part soft urethane, like this one, worked perfectly.
The process worked remarkably well. I laser cut a few silhouettes of the design to act as walls for my mold, and then etched a little panel with the illustration on it. Since the laser removes material to create the etch and is so incredibly precise it worked really well to create the detailed illustration in 3d relief. When I stacked the mold together and added a spray release it worked amazingly. If you're curious about mold making you might consider reading some of my other instructables.
The trick with all this was finding the right material for the stamp. After some trial and error with wax, hot glue, and rubbers as casting material I eventually found that a 2 part soft urethane, like this one, worked perfectly.
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