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Prince Rupert's Drop EXPLODING in Epoxy Resin at 456,522 fps - Smarter Every Day 273 (Patreon)

Published:
2022-05-29 14:10:34
Imported:
2026-06

Content

This is something I've always wanted to do.  Thanks to YOUR SUPPORT on Patreon, I was able to rent a Phantom V7510.  These things are quite expensive to rent, so thanks for making this happen!  There's so much complicated stuff going on mechanically in this video that I've decided to do a Patreon live stream for those supporting at that level. There's a lot to talk about in the high speed. I'll schedule that for sometime next week!   If you're in the U.S., I hope you have a safe and fun Holiday weekend!

Regards,

Destin

Files

Prince Rupert's Drop EXPLODING in Epoxy Resin at 456,522 fps - Smarter Every Day 273

Go to https://brilliant.org/smartereveryday to sign up for free, and also, get 20% off your annual premium membership ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Other videos related to Prince Rupert's Drops: http://www.princerupertsdrop.com Prince Rupert's Drop T-Shirt: https://www.smartereveryday.com/store Email List to be notified when I upload: https://www.smartereveryday.com/email-list ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Tweet Ideas to me at: http://twitter.com/smartereveryday Smarter Every Day on Facebook https://www.facebook.com/SmarterEveryDay Smarter Every Day on Patreon http://www.patreon.com/smartereveryday Smarter Every Day On Instagram http://www.instagram.com/smartereveryday Smarter Every Day SubReddit http://www.reddit.com/r/smartereveryday Ambiance, audio and musicy things by: Gordon McGladdery https://www.ashellinthepit.com/ http://ashellinthepit.bandcamp.com/ If you feel like this video was worth your time and added value to your life, please SHARE THE VIDEO! If you REALLY liked it, feel free to pitch a few dollars Smarter Every Day by becoming a Patron. http://www.patreon.com/smartereveryday Warm Regards, Destin

Comments

Robert Ayers

Is it cheaper to rent one of those or fly out to visit one of the YouTubers who already has one.

Robert Ayers

Destin, it's been a long rough night. This is exactly what I need right now, thank you.

William

Oh man, A Shell in the Pit bringing back some nostalgia.

Maarten Daalder

If you ever do another prince rupert drop episode, could you do one with fully cured epoxy? And one in ballistic jelly?

Iñaki Guastalli

I might be missing something obvious, but why not try to let the epoxy get 100% hardened (with the drop hanged up so it doesn't fall all the way down) and crack it then? (don't know how long epoxy takes to cure, I assume something like 24/48hr ?)

Jesse Gilmartin

There is a huge difference in clarity vs hardness vs time in different epoxy. My first thought for you would be to use a "deep pour" epoxy from Total Boat. Same stuff people use for live edge river tables. Super high clarity, but the cure time is exponentially longer. Come to think a out it that may be a benefit. Make a few, suspend the drops in the deep pour epoxy, and come back in 24, 30, 36, 48 hour intervals and see what results you get.

Brian H

I'd echo the deep pour epoxy comments already made. Better clarity and longer working times, and would be likely that it'd be easier to find that ideal viscosity window with the longer working time. Lessons learned, though, and cool results even with the challenges!

insideHardware

Fun vid! If trying for epoxy that is not cured I would suggest adding die to both the epoxy or the glass.

Katharina Neugart

what a wonderful video! I have a request: Can we get a few raw frames exported as .png files to use as wallpapers? At 15:20 it looks so beautiful <3

5731la

I bet you could find out what that bubble is in the epoxy by pointing a laser at it and seeing how it diffracts

Nero's Workshop

I have a suggestion for the medium. At least if you want to track things like the energy, or shape of the explosion. You could use clear silicone to encase the drop, I suspect the end result will be the same (a powdered drop) but I think the rubbery support would let you see more. ... If I had a high speed camera I'd be on the way to the hardware store now. Or ordering with smooth-on.

Barron B

As mentioned above slow cure epoxy would give a better window of work time. But what comes to mind if you’re wanting something “measurable” for energy ballistics gel comes to mind. It is very well documented regarding its material properties. The down side is it’s going to ripple much harder from the shockwave. I’ll keep thinking on this. Because I want an exploding Prince Rupert’s frozen in time for my desk at work.

Steven Horii

Seems you could also calculate the propagation speed of that shock wave.

Mike O'Dell

You need an epoxy with a longer pot life and you need to learn how to mix it. Large volumes mix much more slowly than small, and the initial viscosity slows it even more. That’s why you have such a non-uniform density field. Also, epoxy formulation determines how much it will flow to even out surfaces when applied over areas and how much it tends to retain the initial shape of the surface. This is a big issue in injection moulding. Call the application support folks at Maas Epoxy and tell them what you are trying to do. They’ll get you hooked up with the best choice for your application and can brief you on procedures. They are the best - *no* amine blush (or amine allergy development) either. Tell them Mike O sent you. Bebop Tango built in Key West by Walter at Constellation. (we used a *lot* of their Key West special formulation)

Steve

Great video. About the DTW fountain. I work in the terminal there and heard they turned it off during the downturn in travel during the pandemic to save money. I don't know the exact figure but I hear it costs tens of thousands of dollars per day to operate. I don't know if it's still turned off as a cost savings measure or if it developed a mechanical issue in the last few years but I haven't seen it running since early 2020. :(

Tom Murphy

1. What is the Patreon Tier for Live Stream access?

Tom Murphy

2. You cant boil epoxy in a vaccum. I work with Epoxy and have won awards for it with wood turning. If you want the bubbles to be very very small and thus the epoxy to be clear, you have to put in a pressure pot while it hardens. (and yes, those streaks you saw mean you didnt mix it enough. Mix it until you think its done and then mix it about the same again ... thats my rule :) .... Just watched to the end and I cried every time you boiled that epoxy. Its destroyed when you boil it like that, I'm actually kinda surprised it hardened at all!! Get an epoxy with a longer open time (Crystal Clear might be good) and then warm both bottles separately in a bath of water to make them viscous (to help with the mixing) and then mix them till there are NO streaks left in the liquid. Then start trying to dial in your timings. It will harden homogenously and you should get something more like what you are looking for.

Jaknowwho

Awesome video as always! This is definitely something I'd love to experiment with someday when i get the time. Thanks to you and everyone else's comments, hopefully I can make some cool desk sitters and possibly some cool Christmas gifts. Of course, I'd definitely be down to buy some of these if anyone knows a good hook-up, or if Destin would be down to sell them haha.

Rick Corbitt

Fascinating, once again. I'm with you Destin, the more I see, the less I understand.

Theflashjaxx

What about filming breaking PRD using Schlieren? Might be some interesting results.

Rebecca A Minelga

Hi Destin, just watched this latest video and wanted to thank you for all your hard work and for sharing it with all of us. It kind of felt full circle, because the original Prince Rupert's Drop was the first video of yours we ever watched! We watch your videos with our two boys, 9 and 5, and we especially love seeing the 9yo light up with some of the cool stuff you do, but as a homeschool mom, what is most impactful for me is pausing your videos and talking about the scientific method, the iterative process, the joy of discovery, and what questions we *can* ask even when the project *isn't* working. Thanks for bringing that process into your videos as much as the cool stuff you get to do! ~R

Martin The Orange

ok, where do we pre-order this? I want to pay for someone to make this. Please. The last one you had in there, which showed the pressure wave propagating - I really really want this. Please. Destin. Please :)

Aaron Latham

If you haven't already, can we please get some "Goggle up.... Science is about to happen" t-shirts? I would love to buy one.

gosiemople

Hey Destin, I was thinking, maybe there is a non Newtonian fluid that you could use for this that is transparent? It would be perfect if you had a fluid that has a high viscosity under low stress and low viscosity under high stress. That way the bulb will explode significantly more. Just an idea. Loved the video again

Steve Lemon

Just wondering if you would get an interesting pattern if you set the PRD in the Ultra clear ballistic gel? Because it's a controlled viscosity, and you could then cut it into sections - A physical MRI :)

Lars Sturm

If you ever have another stab at this and trying stuff with epoxy, may I suggest a colab with Xyla Foxlin? She is an awesome maker and very experienced in all things epoxy.

Anonymous

That was a fun and informative video, like always. If you are wanting to try different materials, I suggest PDMS (polydimethylsiloxane). It’s a two-part, thermally cured material that has a broad range of viscosity and high optical clarity. Depending on your A:B ratio, you can end up with a flexible rubber or rigid solid. If this is of interest, I’m happy to provide more details.

Anonymous

Awesome video Destin. Thanks so much for trying to teach an old dog new tricks. Love your videos! Take care.

Austin Burnham

Anyone know what level of patron gets the livestreams? The descriptions don’t mention it since he changed up the tiers.

Anonymous

I had a grin, ear to ear when you finally got the PED to stay put in the epoxy when it exploded

Anonymous

We learned a lot about working with epoxy resin while restoring a fiberglass fishing boat. I think you could get a lot better results if you try some different epoxies, particularly some slow cure ones, or those intended for casting. We got some from http://www.uscomposites.com/epoxy.html and had good luck, but not sure how well they'd work for casting. That smoke you're seeing tells me that it's curing too fast, and I'll bet that's why you're seeing the air bubbles and had so much trouble with the clarity on the larger boxes. The smaller boxes also probably helped dissipate heat, and mixing the epoxies in an ice bath can buy you some pot life. Couple things worth trying next, at least, if you can get more PRDs.

Tony Ferrell

It’s always easier to be a critic/suggester than a doer, but I came here to add my vote to ironing out your epoxy skills.

Kurtis Moss

Destin and team, Super awesome. Just the brighten up our whole family needed. Also loving the community engagement on this one. Lots of skilled folks on here with epoxy! And we’re all so glad you came up with the next Patreon gift! 🤣🙏