1
00:00:00,150 --> 00:00:04,430
R3.4 is the print-focused revision of R3.3.

2
00:00:04,430 --> 00:00:11,940
Rigid case: 78 × 150 × 24 mm. Electronics and control
locations retained.

3
00:00:11,940 --> 00:00:14,540
This remains separate from the 28.2 branch.

4
00:00:15,317 --> 00:00:22,597
Removed obsolete cage fragments, including a 0.05 mm strip.

5
00:00:22,597 --> 00:00:29,517
Rebuilt local shell skin and replaced the thin tongue with a
screw-clamped butt joint.

6
00:00:29,517 --> 00:00:34,527
Fewer delicate edges to print and clean up; active openings
retained.

7
00:00:35,317 --> 00:00:40,707
Broader rails and floors replace fragile front lips and
terminal strips.

8
00:00:40,707 --> 00:00:46,337
Seat and stop shims are integrated. Do not add the old shims
again.

9
00:00:46,337 --> 00:00:49,827
Install switches face down until the rear shell captures
them.

10
00:00:50,608 --> 00:00:53,778
Printed play and volume caps are combined with their
carriers.

11
00:00:53,778 --> 00:00:58,338
Fewer separate cap bonds and assembly steps for the fit
prototype.

12
00:00:58,338 --> 00:01:03,248
Reinforced talk carrier; smooth grip remains a separate
flexible part.

13
00:01:04,025 --> 00:01:11,835
Talk guides: 5.0 mm outside, 2.6 mm bore, 1.2 mm nominal
wall.

14
00:01:11,835 --> 00:01:17,885
Tiny locating nibs removed; wider screw ears; reinforced mic
and LED keepers.

15
00:01:17,885 --> 00:01:22,625
Intended to improve handling; physical strength still needs
testing.

16
00:01:23,400 --> 00:01:26,620
Added material was checked against surrounding components.

17
00:01:26,620 --> 00:01:31,080
Cable-bridge roof and battery fence: 1.0 mm sections.

18
00:01:31,080 --> 00:01:34,710
The thicker grille bezel projects 1 mm farther forward.

19
00:01:35,483 --> 00:01:41,473
25 parts passed the structural wall screen; no flagged
measurements below 1 mm.

20
00:01:41,473 --> 00:01:49,213
All STLs are single watertight meshes. 20 sampled button
positions passed.

21
00:01:49,213 --> 00:01:54,213
Geometry checks are not an every-point proof or a physical
strength test.

22
00:01:54,983 --> 00:02:03,533
4 main Bambu Studio projects: 21 rigid PLA parts. P1S / 0.4
mm nozzle.

23
00:02:03,533 --> 00:02:10,133
All 5 projects test-sliced successfully with zero mesh
repairs.

24
00:02:10,133 --> 00:02:13,873
Rim and talk grip remain separate: flexible material
required.

25
00:02:14,650 --> 00:02:20,770
Start with the button-fit plate: seating, return, supports
and screw clearance.

26
00:02:20,770 --> 00:02:26,630
Switch dimensions remain nominal; the missing cellular-
module solid is a placeholder.

27
00:02:26,630 --> 00:02:35,210
A better fit-prototype basis. Wiring, optics, RF and
physical durability remain to test.