Mirror-Polished Japanese Foil Ball Challenge Crushed in a Hydraulic Press-What’s Inside?

okay today I’m going to be taking the Japanese aluminum foil ball challenge so this is a challenge that I’ve seen floating around the internet these last few days so I wanted to make one myself and see if I could actually make a solid ball of aluminum and then I can test the density of it and then finally I’m gonna crush it in my hydraulic press and see if it crushes as though it’s a solid block or a solid ball of aluminum so let’s go ahead and get one made okay first let’s get my ball [Music] okay here’s my aluminum ball now let’s see if I can pound it down into a spherical shape first [Music] okay we’re getting there this is already working better than I thought it would looking pretty spherical it’s getting solid through the core and it’s getting actually shiny without even polishing it yet okay now I’m just gonna sand this for a while with some water okay now I’m using thousand grit sandpaper then finally I’ll polish it up [Music] okay here’s my final product a shiny aluminum ball this is awesome it’s just a shiny sphere of aluminum now so what I want to do with it is I want to crush it in my hydraulic press and I want to see if it crushes as though we’re solid aluminum or I can reduce the volume of it more with the hydraulic press but before I do that first let’s test the density of it to check if it’s as solid as solid aluminum or not okay first let’s get the mass of it then we’ll get the volume of it and take the mass divided by the volume that should be our density okay we got 51 grams okay now let’s get our volume here so our waterline is right at 500 milliliters let’s see how much it increases floats so I’m pretty sure that’s lighter than aluminum already okay but let’s still go ahead and measure the full volume here gotta get all the way under the water that’s about an increase of 60 milliliters okay so I measured my density to be around 51 grams divided by 60 milliliters which is around 0.85 grams per milliliter and the actual density of aluminum is 2.7 grams per milliliter so this is a little less than half as dense as real aluminum so this is kind of cool because it looks and feels like a solid metal ball but it floats on water it’s really neat so we so this is about half as dense as a solid ball of aluminum let’s crush it now and see how small we can actually get it okay Japanese aluminum foil ball in the hydraulic press and I worked so long on this I hate to crush it but you got to do what you got to do okay aluminum foil ball three two one so that had a lot of room to keep getting flattened let’s see what it looks like so I should measure the density of it now see if we got closer to solid aluminum okay now to get the density of this instead of just measuring the volume with water since I have a flat circle here that is seven centimeters in diameter and around point seven centimeters thick just use PI R squared times the thickness and we get we get around 27 milliliters of volume here and our weight was 51 grams so we’re at around 1.9 grams per milliliter so that’s a lot closer to solid aluminum so it still has some empty space in there because we’re not quite to the density of aluminum but it’s pretty darn close it’s filling a lot more hefty now a lot more solid but you can see just how it flakes apart there’s still some empty volume in there with just air in it but this is what happens to a Japanese aluminum foil ball challenge in the hydraulic press hey everyone thanks for watching another episode of the action lab I hope you liked it if you’re not subscribed yet hit the subscribe button hit the bell to be notified with my latest videos out and if you have any questions about this video or have any comments or suggestions for a future video let me know in the comment section thanks for watching and I’ll see you next time

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