World Models and Simulation

Constant sprocket rpm can preserve average chain travel while hiding a within-tooth speed cycle. Compare discrete pin geometry at matched mean transport.

A 2 mm thread pitch can mean 6 mm per revolution. Follow one connected start to distinguish pitch from lead and avoid a 3× ideal conversion-scale error.

Planet spin in the fixed frame differs from spin relative to a moving carrier. Check parent rotation and the missing second member speed in a planetary model.

Entrance clearance alone cannot establish a tilted peg’s finite insertion clearance. Compare short and deep bores, axis alignment and the actual flat tip.

A shorter U-loop can still cross an end wall. Compare fixed-anchor placement, the shortest straight and the whole outside envelope in measured Blender geometry.

A second round pin can bind despite individual hole clearance. Compare relief direction and combined spacing/transverse error using independently checked Blender geometry.

Two universal joints can match full revolutions while advancing unevenly. Compare yoke phasing and equal bend angles using independently audited native Blender geometry.

A pad can fit a narrow neck while its carrier hits a wider shoulder. Compare reach, pad height and placement using seven independently audited Blender geometries.

A clear tool path can still drive the forearm or elbow housing into a fixture. Compare two IK branches and an outside waypoint in an audited two-link model.

A bit can reach a screw while the shaft or collar hits the lid. Compare opening diameter, offset and drive depth using the complete driver envelope.