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Big Ammo Clip (50 BMG, Vase Mode) — image 1
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Big Ammo Clip (50 BMG, Vase Mode)

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Big .50 BMG cartridge with clip, the round used in heavy machine guns and high powered sniper rifles (NATO).

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Model information

Category
Props
License
Creative Commons — Attribution — Noncommercial — Share Alike

Model of a .50 inch caliber cartridge (known as 50 BMG or 12.7×99mm NATO). The clip is fantasy and just for display purpose, it fits 5 cartridges. This ammunition type is for example used in the M2 Browning heavy machine gun and the M82 Barrett anti-materiel rifle.

The main purpose of this model is as an exercise in vase mode printing. Vase mode is very suited for a cartridge as it doesn't make any distracting seam lines in the print. The cartridges and clip seen in the pictures were all made in vase mode with sequential printing.

Main settings to consider in PrusaSlicer:

  • Spiral Vase: true

For strong walls and prevent collapse at overhangs:

  • Bottom solid layers: 10  (enough to cover the cartridge case rim)
  • External Perimeters: 0.8 mm  (works also for 0.4 nozzle)

Printing of multiple objects in vase mode:

  • Complete individual objects: true
  • Extruder clearance, Height: 140 mm  (objects must be oriented to avoid printer collision)

Appearance:

  • Bottom fill pattern: Concentric
  • Top fill pattern: Concentric

For better bed adhesion:

  • Elephant foot compensation: 0.1 mm  (or use Brim)

For faster print time:

  • Layer height: 0.3 mm
  • Min print speed: 31 mm/s
  • Nozzle temperature: 195 C  (lower than usual to make cooling faster)

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