Home
Creators
Search Recent Random
Posts
Search DMs Popular Hash Lookup Tags Random
Importer
Import FAQ
Register Favorites Keys Review DMs Logout
Community
Telegram ThePornDude
Home Creators Posts Import Register Favorites Logout

New video: building an edgeless brownie pan (Patreon)

Published:
2025-06-02 03:19:50
Imported:
2026-06

Downloads

Content

Hey Everyone!

I just wrapped up my latest project: building a brownie pan that bakes without any hard, chewy edges. What started as a simple idea turned into a pretty involved build - with a lot of machining. The designs came out great, and the results were surprisingly fun. Hope you enjoy the video!

As always, I’ll be scheduling a director’s commentary in the next week or so to walk through all the behind-the-scenes details that didn’t make it into the final cut. In the meantime, if you have any questions, feel free to drop them in the Discord. I’ll do my best to answer as many as I can.

Also, if you happen to have a DJI Action Cam and a need to film in splashy, messy environments and access to a compressor… you can download and print the custom air knife I designed! It’s made for the DJI Action 4 with the SmallRig cage, and it’s available here. I designed it for SLA printing so I'm not sure how it would fare with FDM. Let me know if you have success (or issues :).

Thank you so much for your support!

-Shane

Files

Baking brownies from the inside out

Check out https://brilliant.org/StuffMadeHere/ for a free 30-day trial and 20% off your annual premium subscription! Help support these projects on Patreon: https://patreon.com/stuffmadehere Be sure to subscribe if you like this kind of stuff! https://tinyurl.com/sub2smh Edgless brownies are one of those questions that has lived rent free in my head so I decided to just build it. Sources used in video: - Plot of acoustic levitation: Cancino-Jaque E, Meneses-Diaz J, Vargas-Hernández Y, Gaete-Garretón L. On the dynamics of a big drop in acoustic levitation. Ultrason Sonochem. 2023 Dec;101:106705. doi: 10.1016/j.ultsonch.2023.106705. Epub 2023 Nov 24. PMID: 38029567; PMCID: PMC10716583. - Batter thermal conductivity: Burand, Tony; Tetzlaff, Michael; and Smith, Jacob (2013) "Cooking Up the Optimal Baking Algorithm," Colloquy Undergraduate Research Journal: Vol. 1, Article 6. Available at: https://spark.bethel.edu/colloquy/vol1/iss1/6 - "Buy now" infomercial screen: ttps://www.youtube.com/watch?v=sqgyxIQTcQc

Comments

Rich Gross

Why would you want to make brownies without the best part? ;)

Xelgium

Dang, I was really hoping to see some sort of maglev brownie cooking technology, but this was still super cool! 😎

Tschäff Reisberg

spinning the lens real fast is how professional news cameras keep the rain off.

Imran Uddin

I haven't even watched the video yet, but I know an edgeless brownie pan is a brownie pan made out of brownies. That is the only way. 🤣

Philip Eisele

Good job, man! It’s just so much fun to apply engineering solutions to common problems. I am an engineer too, I develop industrial xray measurement systems for battery quality control. My job has changed a little in the recent years where I now have to do a lot more management-type tasks. You motivate me every time with your videos to find the awe again in this amazing field of work. I wish more people would get to experience this deep level of joy when you get to solve a problem, fix an issue or come across a great idea. Anyway, keep on doing what you are doing. (Very jealous of your home-shop setup 😉)

Robert Hanton

Loved the mechanism to raise/lower the top portion of the pan. While watching it I did wonder if an alternate approach would have been a pan with a metal bottom (to heat the brownie mix quickly and evenly) but sides made of something with a thermal conductivity on par with or lower than brownie batter. According to https://spark.bethel.edu/cgi/viewcontent.cgi?article=1005&context=colloquy they estimate the thermal conductivity of brownie batter as ~0.35W/mK, while silica glass, which was my first guess, is more like 1-1.5W/mK. However, according to https://www.engineeringtoolbox.com/thermal-conductivity-d_429.html they list concrete as having a thermal conductivity of 0.4-0.7W/mK, depending on the mix. Concrete is porous, so it'd need coating with something like teflon, so now we need a teflon-coated concrete and metal pan... ok, so maybe not all that straight-forward.

Ken Barlow

Far more expensive than $899.99, surely all that 5 axis machine time is hot. That said, you could mold it out of silicone, which is an insulator, to prevent heat soaking the exterior edges. Make the pan thicker on the outside edges, a little thinner along the bottom, thinnest in the center. Or do what cake bakers do to prevent edges and use insulating wrappers, like towel strips but made of asbestos or something that insulates, in the form of a tape, maybe 2" wide. You want the sides and bottom to have the same insulating properties as the top, right? Also, isolate the bottom from the cooking rack because that also bleeds heat into the pan along those lines.

John Tollini

Crazy thing is I'd bet that some us would buy it! The next step would be to make one that that does an even number of edge/corner vs "center" brownies. For the divided brownie families.

Cody Blotske

cool, cool.... now mortar a brownie into my mouth please!

stuffmadehere

Yeah, I way way lowballed the price estimate because I thought people wouldn't believe the true cost to have all those parts fabricated. Would be interesting to get quotes. I went through a lot of concepts for mediating the heat transfer into the pan. I actually designed and ordered material to make an entire pan which surrounded the brownie with a pressure cooker to precisely control the temperature / heat transfer. Ended up getting scrapped because I had some big doubts about the efficacy and it was an extremely involved build.

stuffmadehere

That is really funny. But... the pan has edges so where would it end?

stuffmadehere

Yep! I started to design a spinning window design but I didn't like how big it was going to be. The 5 axis has extremely limited clearance inside the enclosure and a bigger design can only fit in a couple of spots. I had some ideas for a very small spinning window for the action cam but it would be very tightly coupled to the camera and I was concerned about vibrations messing up the footage. That's why I just did an air knife for now since I knew it would work and not turn into an R&D project :)

stuffmadehere

I seriously considered making some kind of acoustic levitation "pan" but the difficulty of making it tolerate the oven temperatures and the extremely small volumes you can levitate made me pass.

caleb kolodziejski

It is super cool to see the progress in the creativity and craftsmanship of your builds. Naturally, the new tools improve the precision. However, the experience you’ve gained through the cumulative effort of all these projects shines through! That lever mechanism is so simple, yet, so beautifully elaborate. I am so impressed. Can’t wait to see the next project.

Andrew Krahn

What connector and pressure do you recommend for the air knife? I don't have a printer, but do have a willing hobbyist friend or two. I'm running a gopro, but I'll gladly kludge some cold shoe adapters to make that work.

Jiawei Zhang

Is it dejavu or there's similar idea in the industry world to heat up solids / solidifyiing liquid with pins? I know there's pin heat sink (made by cold forging) but I don't mean them. Any thoughts? The design is very similar and it's not heat sinks. And I am not talking about waffle makers:)

stuffmadehere

It was fairly low pressure. I don't recall the exact pressure but it was in the ballpark of 5-20psi. I'm using 8mm push lock fittings. It's plumbed into an air switch so I can flip it on and off from outside the machine.