BUILD COMPLEXITY / 01–06

OE Difficulty Levels

An OE level indicates assembly density, the number of sub-assemblies, technical build complexity and the experience expected from the builder. It does not indicate product quality or prestige.

01OE-1

BEGINNER

02OE-2

EASY

03OE-3

INTERMEDIATE

04OE-4

ADVANCED

05OE-5

EXPERT

06OE-6

SPECIALIST

OE-6 is used only for exceptional projects requiring unusually complex building and assembly. Unconfirmed projects do not display an OE class.