# Build status and unresolved details

Translated from the supplied Chinese spreadsheet and annotated photographs. The assembly sequence is reconstructed from the CAD and photographs. No physical build has been validated for this guide.

## Evidence

- The spreadsheet provides the base hardware list, quantities, and historical shopping notes.
- Four image annotations provide controller, gear, wheel-rubber, and stopper details.
- The STEP provides assembly geometry and fastener names.
- The 3MF provides 28 objects on ten print plates and saved slicer settings.
- Photographs and video show a physical prototype.

The source set does not provide a full assembly procedure, terminal-level wiring schematic, or physical test report. The wizard sequence and engineering checks are guide additions.

## Resolve before routine use

- Resolve CAD versus spreadsheet fasteners: M3 × 15/18/20 mm and M5 tilt hardware.
- Confirm both 550 motor shaft dimensions, speeds, running currents, and stall currents.
- Confirm the geared motor shaft and the incomplete 2 kg torque notation.
- Confirm controller terminal labels, current ratings, mounting, and branch protection.
- Measure the complete current budget before relying on the source 12 V / 3 A supply.
- Confirm insert pockets, bearing fits, support mounting, and each fastener location.
- Resolve the outlet revision and measure the stopper, rubber thickness, and final wheel gap.
- Complete guards, slice inspection, and a physical build review before routine use.

## Representation differences

The viewer contains 101 CAD meshes. The print project contains 28 objects. They are separate supplied representations; revision equivalence is unverified. The outlet object name explicitly says revision pending. Names assigned to generic geometry are descriptive identifications.

The assembly animation translates CAD groups to show suggested order. It does not establish insertion clearances, exact tool access, joint order, or a collision-free assembly path.

## Performance

No build time, current price, ball capacity, launch rate, range, speed, spin range, accuracy, continuous-duty rating, or lifetime has been verified. Mesh closure is not physical validation.

## Source cleanup

The original Chinese-named input folder and duplicate root STEP are removed after derivative verification, as requested. English-named working CAD, print files, media, translations, and a historical checksum manifest remain.