Grid Finisty Reference: Define Upper Rim Minimum dimensions

[masibu-labs]

HI All,

While working on a set of light weight designs for the small part boxes, i noted how adhoc the approach to the top rim has been in all models and documentation. This wasn't helped by Zacks original design having a fillet added to it which means the bins are all N*7 + 3.5461906128mm high.

I propose we define the minimum rim that ensures stacking interoperability while reducing the complexity of the design and ensuring the theoretical height is an actual whole mm.

Simplified Rim Change:

The secondary 0.8 mm rim has been removed as was offering limited benefits.
The 0.6 mm fillet on the top surface has been removed. In practical printing this feature is barely discernible however makes definings the
The total height added by the rim is changed from 3.5461906128mm to 4mm.

Dimensions Proposed

New profile versus old profile:

CAD model with implementation
https://www.printables.com/model/353224-gridfinity-lite-ultra-blocks-template