Currently, the stud8.dat primitive (Duplo hollow underside stud) results in a too thin cylinder. Widely used, yes, but the thinness leads some parts authors to use the stud4.dat primitive instead. The stud4 primitive produces a cylinder wall thickness comparable to the 4 LDU of most walls. Compare e.g. the undersides of 15515, 98220, 31066, and 15516.
The real parts have most curved walls slightly thinner than the 4 LDU of rectangular bricks, whereas the underside stud cylinder walls are even thinner, but not as thin as the current stud8 primitive.
What do you think about updating the stud8 primitive to having a slightly thicker wall? Perhaps 3 LDU instead of the current 2 LDU?
The real parts have most curved walls slightly thinner than the 4 LDU of rectangular bricks, whereas the underside stud cylinder walls are even thinner, but not as thin as the current stud8 primitive.
What do you think about updating the stud8 primitive to having a slightly thicker wall? Perhaps 3 LDU instead of the current 2 LDU?