I have only a highschool understanding of physics, and can only hazard guesses as to this weird idea I recently got - could you make a frisbee out of ice? Like, make mold, two pieces of superslippery plastic with the hollow in the shape of a frisbee (shallow bowl with flat bottom and a particular curve to the edge).
Of course you could make it, make it in the same dimensions as plastic frisbees, but that would break on its first catch. I don’t even know if it would fly as far as a regular frisbee due to the much higher weight of ice - the force upward would not change (dependent on the spin of the frisbee and the curve of the outer edge).
So here’s the thing - an ice frisbee must be light even to throw far enough to have fun, but thick (heavy) enough to withstand a catch. (I’m assuming that a throw is less violent, being applied over several feet of acceleration, but a catch is very quick)
One could definately be made, as far as throwing and catching it, I doubt it. I’m not basing this on physics but you have to think that a ice frisbee would probably weigh close to 4 lbs. If it were any lighter, it may fly if you could keep it from flying apart due to centrifugal force, but I really doubt you could catch it without it shattering. I don’t think you could even catch one that was 2 inches thick with out breaking it, but then on the other hand you couldn’t throw it far either. A 2 inch thick ice frisbee? Might as well make a ice tennis ball, nah, better idea… Ice dodge ball. Now that could be done, lol. While your at it make a bunch of small, about 6" dia. ice frisbees, file the edges sharp and then you’ll have ice chinese stars! Maybe too much work though to out do the tried and true snowball fight. I don’t know, if anyone tries a ice dodgeball/ ice chinese star fight, let me know what the outcome was, if anyone is still around.
As far as making an ice frisbee, look in your dog’s water bowl and pick up the ice sheet that forms on the top. Make sure you measure the correct thickness for strength and weight factors though.
Note: Won’t work with square dog water bowls, but those can be used for great giant ice chinese stars!
Can’t believe it, almost forgot. Don’t forget to put rocks in your ice frisbees. As far as making the rocks float in the dogs water bowl so they are in the ice that forms at the top, I don’t know. You have to have rocks though, otherwise how is your ice frisbee going to be better than the “snowball with rocks soaked in water iceball”.
You could make the ice considerably tougher and slower to melt by adding sawdust - around 10% by weight - to the water before freezing. (This figure comes from Geoffrey Pyke’s WW2 plan, never implemented, to make toughened icebergs of this ‘Pykrete’ as mid-Atlantic airfields).