11.2 Easier to print

After v6 (11) I asked for an easier shape to print, with less support and less material. More modularity was fine.
The clamp and the arm are now two prints, joined by two M6 × 20 on washers into nuts in slots in the spine. Only the clamp carries the bolt's preload, so only the clamp prints heavy (5 walls, 30% gyroid). The arm prints at the defaults. The clamp is also a unit other arms can bolt to, which suits a wall mount later.

- The C is 40 mm deep instead of 60. Its front face sits 62 mm behind the shelf's front edge, 2 mm behind the tip of the leg's front flange. The whole C passes through the 80 mm gap between the flanges and slides straight on. v6 had to go on 3 mm behind its place.
- The arm is a 16 × 20 mm bar and a 20 × 20 mm post. It steps out at 45° to v5's 20 × 30 seat for the top 30 mm.
- The plate is an H round the VESA holes on v5's leg, so the screen's speakers stay open.
- No support anywhere. Every hole across the layers is a teardrop, and every pocket roof is at 45°. A check called
flat_roofsflags any face that would need support, and the slicer with tree support on agrees. - The C's stress under 200 N of preload is 3.6 MPa. The limit I use for PLA under a steady load is 5 MPa. v6 was 2.4.
| v6 | v6.1 | |
|---|---|---|
| Printed parts | 4 | 5 |
| Filament | 255.5 g | 158.9 g (38% less) |
| Print time | 7 h 55 min | 5 h 19 min (33% less) |
| Support, tree support on | 6 min 51 s in three parts | None |
| Longest print | The clamp, 5 h 57 min | The clamp, 2 h 24 min |