Curvature of duplo parts 98252 98224 11169

[Peter Blomberg]

The curvatures of parts 98252, 98224, and 4198 (bottom) should be the same and match perfectly with 11169.

  duplo stacked.png (Size: 149.34 KB / Downloads: 36)

The real parts do match, but their digital replicas don't. 98224, 98252, and 4198 (bottom) uses a 40x48 48\1-4edge, while 11169 uses a 47x48.3 48\5-24edge with additional padding.
   

To make things worse, none match the curvatures of parts 2302, 98223, 4198 (top), and 18652 having a 40x48.8 48\1-4edge with padding. However, there is almost no difference between the 47x48.3 48\5-24edge in 11169 and the 40x48.8 48\1-4edge in 2302/98223.

Finally, to prove having done my research this time, I attach two real world test cases, for which I photographed the joined parts and counted pixels. The spread of dots is due to the uncertainty of establishing the exact boundary between two surfaces of equal height. I placed a dot where I thought the main color of the part started to become darker (the real parts have rounding near the edges and that rounding causes darkening of their color in a photo).

  case1.png (Size: 6.87 KB / Downloads: 36)
  case 2.png (Size: 8.15 KB / Downloads: 36)

[Philippe Hurbain]

The curvatures of parts 98252, 98224, and 4198 (bottom) should be the same and match perfectly with 11169.


The real parts do match, but their digital replicas don't. 98224, 98252, and 4198 (bottom) uses a 40x48 48\1-4edge, while 11169 uses a 47x48.3 48\5-24edge with additional padding.


To make things worse, none match the curvatures of parts 2302, 98223, 4198 (top), and 18652 having a 40x48.8 48\1-4edge with padding. However, there is almost no difference between the 47x48.3 48\5-24edge in 11169 and the 40x48.8 48\1-4edge in 2302/98223.

Finally, to prove having done my research this time, I attach two real world test cases, for which I photographed the joined parts and counted pixels. The spread of dots is due to the uncertainty of establishing the exact boundary between two surfaces of equal height. I placed a dot where I thought the main color of the part started to become darker (the real parts have rounding near the edges and that rounding causes darkening of their color in a photo).

You are right... 11169 is fine (and matches very well top curvature of 4198). 4197 could be slightly improved too.
Here attached the raw meshes from BIs for 98224, 98252 and 11169.
But please remember that changing the base part also implies the need to change all existing patterned versions!