K76 / U4 — assembly visualization

Source: K76_U4_montaz_komplet, saved version 5, November 2026.
Video: K76_U4_montaz.mp4, 1920 × 1080, 30 fps, 133.3 s, silent.
Interactive geometry: the original K76 / U4 HTML scene, 58 named parts.
Mesh coordinates, normals and assembly movements have been preserved.
The portfolio viewer changes presentation, selection and camera controls.
The optional Canvas fallback uses a reduced mesh for display only. The full
WebGL mesh is unchanged. Both renderers use the original assembly motions.

REVISION / SCOPE
Historical development configuration: K76 base, U2 body, U3 clamp,
U4 fork and U3 positioning key. Some references originate in P7 R23.
It is not the current R25 print geometry. The movie additionally includes
the older R4 carrier and simplified Parkside batteries. The interactive
scene contains only the adapter. Current carrier development is R10.
R4 has an unresolved reference overlap of about 1.1 mm near the blade fuse.
Electronics, fasteners, cables and batteries are visualization references.
The movie and viewer do not validate physical fit, pinout or current rating.

AUTHORSHIP / LICENCE
Inherited battery seating geometry:
“Parkside battery XT60 adapter” — DAVID HOLECKO.
The source specifies BY-NC-SA without a version number.
Derived printed parts retain BY-NC-SA; no different version is assigned.
The original author is not replaced by the portfolio author.

The simplified XT60H-F reference uses the AMASS 2025V01 dimensional envelope:
https://www.china-amass.net/uploads/107.XT60H-F-SPEC-2025V01.pdf
Undimensioned local details are schematic, not manufacturer CAD.
AMASS drawings are not distributed here.

The R4 carrier in the movie uses inherited XT60-M / KiCad connector references.
Their source conditions, CC BY-SA 4.0 with the KiCad library exception, remain
applicable. See https://www.kicad.org/libraries/license/ for the library licence.

Subsequent project work: enclosure development, measured fit iterations,
connector retention, integration of electronics, scene organization and
assembly visualization. This presentation is a mechanical design study.