Pro Series II 3 inch, current 072304 — Revision B — ESTIMATED
Source identity: CURRENT_072304

This free pack preserves the original STL and STEP geometry from the expanded
Estes Nose Cone Library B. All geometry is in millimeters.

Base diameter: 76.20 mm
Exposed height including features: 254.00 mm (excludes shoulder)
Shoulder: 74.17 mm diameter x 76.20 mm long
Overall X x Y x Z: 76.20 x 76.20 x 330.20 mm
Evidence confidence: low. This is not a numerical tolerance.

These models use educated estimates, including inferred dimensions and shapes.
They are solid exterior references for CAD editing, not verified replicas or
finished hollow flight parts. No printer clearance, original hollow interiors,
electronics or recovery hardware are included. Solid CAD does not prescribe
100% slicer infill. Digital geometry checks do not validate physical fit, mass,
strength or flight suitability. Check actual tubes and print fit yourself.

Why this shape was chosen:
Manufacturer explicitly gives 3 in outside diameter and 3 in shoulder length. Exposed length estimated as 10 in from the oblique photograph, approximately 3.3 base diameters; rounded tip and near-tangent base follow the silhouette. Shoulder OD 74.168 mm is borrowed as an estimate from the existing same-diameter Big Daddy 72695 reference. This is a different nose shape from Big Daddy 072695.

Estimated fields:
- exposed_length_mm
- profile_stations
- shoulder_diameter_mm

See MODEL_RECORD.json for the complete original source record and evidence.
Sources:
https://estesrockets.com/products/072304-pro-series-ii%E2%84%A2-3-plastic-nose-cone
https://github.com/dbcook/openrocket-database/blob/master/orc/estes_ps2.orc

The retained Apache 2.0 license applies to the OpenRocket source database
where used. It is not a new license for this entire model library.
Independent recreations; no Estes affiliation or manufacturer verification.

Full library, CAD source and original notes:
https://iterarocketry.com/nose-cones
Support: info@iterarocketry.com
