Seam part files named for how many to print; publish/ ignored

31/32/33 each hold one piece, so "-x4"/"-x16" read as if the files held 4 and
16 copies. Renamed to -print-4 / -print-16 and rebuilt the Bambu Studio
projects. The MakerWorld upload package lives in publish/ (copies, not in git).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

print/README.md

@@ -48,8 +48,8 @@ They're built from the STLs by `tools/make_3mf.py` (it needs the Bambu Studio fl
 | 26 slip-ring coupler | `v3` | Bigger, to peg into the collar. |
 | 27 slip-ring holder | `v3` | Screws to the post now. |
 | 30 motor bracket shim | `v3` | Copy of `v2.7/30`. |
-| 31 seam plate low ×4, 32 seam plate high ×4 | `v3` | Flat as modeled, nut slots on top. |
-| 33 seam plug ×16 | `v3` | Flat. |
+| 31 seam plate low ×4, 32 seam plate high ×4 | `v3` | Each file is one plate: print 4 of each. Flat as modeled, nut slots on top. |
+| 33 seam plug ×16 | `v3` | The file is one plug: print 16. Flat. |
 | 34 counterweight | `v3` | Flat, pockets up, no supports. Use 100% infill (or as high as you like): its own weight counts. |
 | 35 counterweight lid | `v3` | Flat. |
 | 36 Uno turnaround plate | `v3` | **Print this.** Turns the Uno around so its USB faces the centre; on the v3 deck it faced the wall with no room for the plug. Flat face on the bed, standoffs up, no supports. See below. |