A set of alien flora designed for our 18mm scale Wayfarer miniatures (same models we use for Pocket-Tactics). Scale is pretty relative with alien plants, but if you plan to use them with 28mm scale models, I'd scale the designs up by 166.6%. Also included are the 100mm hex tiles I used for the ground in the pictured diorama.
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Printed mine at a .2 layer height with 15% infill.