Oct 20, 2026 · 19:15

Receiver tube stops get 3 mm of throat behind them; web feet follow the angled socket

Before: Cut through the west outer receiver's passages at X −82.1, looking −X: the pump inlet at left, the upper socket at top, the angled lower socket at bottom right — Cut through the west outer receiver's passages at X −82.1, looking −X: the pump inlet at left, the upper socket at top, the angled lower socket at bottom right

After: Cut through the west outer receiver's passages at X −82.1, looking −X: the pump inlet at left, the upper socket at top, the angled lower socket at bottom right — Cut through the west outer receiver's passages at X −82.1, looking −X: the pump inlet at left, the upper socket at top, the angled lower socket at bottom right

Before: The west outer receiver from +X — The west outer receiver from +X

After: The west outer receiver from +X — The west outer receiver from +X

Each pump receiver's tube stops get a 3 mm straight throat behind them, up from 1.25 mm, and the web under the angled lower socket reaches 1.3–1.7 mm lower.

The four TPU pump receivers each join an upper socket and an angled lower socket through a rounded gallery.

The gallery stands a tube radius plus 3.0 mm behind each socket's tube stop, where it stood a radius plus 1.25 mm, so the shoulder a tube bottoms on has a 3.0 mm straight throat behind it before the passage turns into the gallery.
The crotch web's foot is set one cuff radius below the lower socket's axis, measured across the socket's tilt. That drops it 1.27 mm on the two inner receivers and 1.73 mm on the two outer ones, and the cut behind the socket's mouth lies square across the tilted axis.

The pictures show the west outer receiver; the other three change the same way.

Commit 0c8bbef50 Open in 3D