- The dimensions of Lego are officially expressed as “2 x 2 x 1” or something similar, but 1 in the height direction is slightly longer than 1 in the horizontal direction. This creates a misalignment when you start doing SNOT. I want to understand this properly, not just “something is a little off.
It is convenient to use 0.8mm as a unit. 1U = 0.8mm
- One horizontal unit is 10U
- Sometimes this is called one stud.
- Heightwise, 12U for blocks, 4U for plates
- This is sometimes referred to as 1H
- Stud (projection) height is 2U, diameter is 6U, gap is 4U
- Pin holes are 6U so studs can be inserted
- 2U for thin sections of brackets and headlights, and 2U for wall thicknesses such as blocks
- The headlight recess is 2U, so a 4U plate would make it 12U.
consideration
- I’ve seen some diagrams that use 1.6mm as one unit, but then I get 0.5 units.
- If 0.8mm is one unit, it becomes an integer.
- One stud is 10U, which is easy to understand.
- Slightly longer verticals are multiples of 3 following 10, 12
This figure shows 0.5 because 2U is one unit.
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- Wikimedia
- Studs are 0.1mm longer than 2U and blocks are 0.2mm skinnier than 10U
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