Sturdy Credit Card
thingiverse
This is an ID-1 spec credit/debit card design. If your first layer is small enough, then the downward-facing side will be smooth with 2 different directions for accents. I've designed this as a toy for my 1 year old daughter, and I'll be producing some coins to round out the set. I printed mine with the magnetic strip side down, but it shouldn't matter either way.
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