Could you compare Grid Beam to something like OpenStructures, for the uninitiated?

GridBeam is a building system where the primary component is a beam (e.g. 40mm x 40mm x 2000mm), with a repeating hole pattern where the distance for each hole is equal to the width of the beam. these beams are joined together with nuts and bolts into tri-joints. there are also secondary components called skins (panels), for example a sheet of plywood, which is bolted to the beams using the existing holes. for both beams and bolts, the strategy is to use common sizes as much as possible, to reduce any need to cut and increase re-usability. there are also tertiary components called accessories (for example a wheel), which plug into the beams, often using an adapter component to fit into the hole pattern.

OpenStructures, as far as i understand, is a grid system for component designers to follow, in order for components to share the same hole patterns. the grid is 40mm x 40mm and is fractal (scales up and down).

the components can be anything, as long as they follow the grid system for any sockets and plugs.

from a rough glance, i reckon 40mm x 40mm GridBeam and 40mm x 40mm OpenStructures are compatible, as the hole spacings align. so i reckon the ideas could be a good match for each other, keen to continue exploring as we progress in practice.

(will answer the other question later, brb..)