naca-0018-airfoil-section-100mm-chord

NACA 0018 section, 100 mm chord × 20 mm span, closed trailing edge, 160 points from the equations (scale to your chord)

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, Xem Studio Design License — Xem Studio

Dimensions

x (% chord)	100
upper x	100.000
upper y	-0.000
lower x	100.000
lower y	0.000

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From the full sheet

NACA 0018 airfoil: every size, notes, mating features and sources. What is the exact shape of the NACA 0018 airfoil, and what do the digits mean?