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Physical AI Lab

Weld-corner cleanup: brush reach, grinder clearance and footprint

Published: October 8, 2026 by Physical AI Lab

Three static Blender poses separate target reach, rigid tool-body clearance and projected working footprint. Moving the grinder axis changes clearance without proving a cleaner process.

Categories World Models and Simulation

Screw presence, length and seating need separate checks

Published: October 8, 2026 by Physical AI Lab

Four static Blender states distinguish an absent screw, a reference screw, a longer screw and a tilted seat pose. Each result answers a different geometric question.

Categories World Models and Simulation

Robotic screwdriver retraction changes the loaded tool envelope

Published: October 8, 2026 by Physical AI Lab

The outer screwdriver housing can stay unchanged while the loaded screw moves from a contained transfer state to exposed working reach. We checked both static states in Blender.

Categories World Models and Simulation

Tool-changer ports: the flange can fit while the circuits swap

Published: October 8, 2026 by Physical AI Lab

The generic interface kept its pilot clearance and mounting-hole pattern at 0 and 180 degrees, but the half-turn exchanged the measured aperture pairings.

Categories World Models and Simulation

Tool-side compliance: choose the slide direction before counting its stroke

Published: October 8, 2026 by Physical AI Lab

Two generic 18 mm slides produced 15.588 mm and 9.000 mm of normal approach, showing why compliance direction matters before force tuning.

Categories World Models and Simulation

Bin extraction: turn the held part before or after lifting?

Published: October 8, 2026 by Physical AI Lab

The same grasp and final pose produced different intermediate clearances: turning low obstructed the bin, while lifting first cleared every sampled pose.

Categories World Models and Simulation

Joint trajectory speed scaling: virtual time is not wall time

Published: October 8, 2026 by Physical AI Lab

Two Blender slider rows show why a half-speed reference can be 60 mm behind an unscaled schedule without that difference being tracking error.

Categories World Models and Simulation

Joint trajectory tolerances: what four Blender slider cases showed

Published: October 8, 2026 by Physical AI Lab

Four measured Blender slider cases separate sampled path error from endpoint goal error and show why a later endpoint cannot rescue an earlier path-tolerance abort.

Categories World Models and Simulation

Isaac Lab demonstration replay: state agreement and task success

Published: October 7, 2026 by Physical AI Lab

An Isaac Lab demonstration can load and step while state agreement or task success remains unresolved. Use this evidence ladder to diagnose replay results.

Categories World Models and Simulation

MoveIt parallel planning: define how the returned solution is selected

Published: October 6, 2026 by Physical AI Lab

MoveIt parallel planning needs a declared selection criterion. See why early stopping, shortest joint-space paths and finite obstacle clearance answer different questions.

Categories World Models and Simulation
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