What is the interference lock offset of a LEGO stud/hole such that it fits snugly into another piece? (i.e. What are the snap mechanism dimensions?) - Quora
Actual size of LEGO brick 2x4
LEGO Patent | Brickipedia | Fandom
LEGO DESIGN - modelling a 2x4 lego brick in SolidWorks! - YouTube
Amazon.com: Classic Bulk Brick Block 2x4, 100 Piece Building Brick White, Compatible with Lego Parts and Pieces 3001, Creative Play Set - Compatible with Major Brands(Colour:White) : Toys & Games
3D Printed LEGO Brick - 2X4 by VLAD-MARIUS | Pinshape
8 - Molding & Casting - How To Make (Almost) Anything - Alex Berke @ The MIT Media Lab