Bullet Matryoshka / Ammunition Nested Doll

thingiverse

Human-scale replicas of real ammunition meticulously arranged side by side. To achieve accuracy, I selected rounds fired from various multi-barrelled firearms whenever possible. The rounds chosen are: 5.56x45mm NATO, used in the XM-214 Microgun six-barrel rotary machine gun, 7.62x51mm NATO, utilized in the M-134 Minigun six-barrel rotary machine gun, .408 Cheyenne Tactical, employed in some sniper rifles (no multi-barrel firearm round was found that would fit), .50 BMG (12.7x99mm NATO), used in the GAU-19 three-barrel heavy machine gun, 20x102mm, fired from the M61 Vulcan six-barrel rotary autocannon, 25x137mm, utilized in the GAU-12 Equalizer five-barrel rotary autocannon, 30x173mm, fired from the GAU-8 Avenger seven-barrel rotary autocannon, famous for its ability to fire 65 rounds per second. Each round can be printed in two parts (requiring a filament change if the projectile needs to differ), or in three parts - two for the case and a separate projectile that can be glued or simply friction fit. Some projectiles have two versions: a looser fit and a tighter fit. This is crucial when seeking a good friction fit, but if gluing is preferred, the regular version would suffice. Some rounds feature thin walls; ensure your slicer handles them correctly. For PrusaSlicer, set "Detect Thin Walls." Models will appear more refined with seams aligned. Set "Seam Position" to "Aligned" in PrusaSlicer for optimal results. Filaments used in the images were Fillamentum Gold Happens and Polyalchemy Elixir Alpha Brass.