I started with an old CAD drawing of a lego brick, some understanding of brick sizing rules and the build instructions. Then I made every single brick down to the smalest detail.
At the end I had to merge all similar color connected bricks because it was pushing the limitations of my ipad and was crashing. Having the Lego logo on every single knob on all the bricks wasn’t helping.
That’s a real nice design. Before you know it, you will have a library of all types of bricks Lego has available and you could start creating your own Lego designs. Yesy text (and lots of it) will bring you to the limits of your hardware. Maybe move it over to a pc or mac with more memory resources?
All dimensions are all divided by 0,4mm
1,6 mm is the height of a knop(with the logo) and 2,4mm is the radius
3,2mm is the height of a flat block
9,6mm Is the height of a regular block
And I used online resources like this page for referances.