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Trying to picture how an oscillating bowl makes a snowball ... |
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Also, you're trying to use negative pressure to draw the snowball into the muzzle of the weapon, but that would only work if the snow fitted snugly into the bowl, right? And you've made the bowl hydrophobic, so wouldn't that tend to break the seal, and cause the new snowball to just stay on the ground when you lift the blunderbuss? |
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The negative pressure intake is at the centre of the bowl so hydrophobic be damned the ball will stick. This [link] will show you how to make a perfect snowball with a bowl. |
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Unless you have some way to actually compress/pack the snow densely into the mold, I suspect you're gonna have a poof of powder in your face as soon as it leaves the barrel upon firing. |
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You just need two hemispherical scoops mounted on lever arms like tongs. Pulling the lever operates a cycle of extend - close - retract - open so that the scooped up and compressed snow is left on the hydrophobic non-stick slingshot platform ready for rapid ejection. |
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