Master Face-Turning Rhombic Dodecahedron Eitan Cher 2022-11-11 | I honestly don't know why this video wasn't made public when I filmed it back in 2014 at Brandon's place. I was just going through my old videos and realized that this video had literally zero views, and it was because it was set to "private" for some reason.The Master FTRD is a 2-layer face-turning rhombic dodecahedron. I actually updated the design recently, and you can see it here: youtu.be/uh7vi_z93X4
Radiolarian 5+ Eitan Cher 2024-01-09 | The Radiolarian 5+ is an unbandaged version of Jason Smith's Radiolarian 5, which was a face-turning icosahedron with a cut depth just a bit deeper than Eitan's Star (Radiolarian 4). This 5+ puzzle adds in a few unbandaging cuts to split up the largest parts of the puzzle, opening new avenues for scrambling fun.Read more about it on the TP forum. twistypuzzles.com/forum/viewtopic.php?t=39153The puzzle turns really well, except for one troublesome mechanical issue that is inherent to this geometry: the tiny edge pieces can rotate on their own. I don't think I'll be offering this puzzle for sale due to this problem. I might give it another shot down the road, but I want to finish several other projects first. I'll update this description when/if that happens.
Dreidel Burr | Puzzle Advent Calendar 2023 Eitan Cher 2023-12-04 | I decided to bring a little Hanukkah spin to the Puzzle Advent Calendar. Happy Hanukkah, and I hope you enjoy the puzzle!If you want to print one yourself, check it out at thingiverse.com/thing:6342535The next video will be by Infrabread, whose channel can be found here: youtube.com/channel/UC9_bKhm1G1XapTw6RxELvZg2023 Puzzle Advent Calendar playlist: youtube.com/playlist?list=PLtysvchxBCmR8YJ0ELaAO4wUnWTzL4DB7Puzzle Advent Calendar Instagram:instagram.com/the_puzzle_advent_calendar2024 Interest Form:https://forms.gle/nEitHf1uhawT5qyd7
Big Kahuna Eitan Cher 2023-11-05 | This is my new version of the Big Kahuna. It is a Face-Turning Rhombic Triacontahedron, with rather deep cuts.I made my first attempt at designing this puzzle about 12 years ago, and it was a total dud. It locked up like crazy, and it eventually disintegrated in my hands. Looking back at the CAD over a decade later, I was shocked to discover that I had tried to make this puzzle work with only 2 shells. :shock:The new version uses 4 shells, and it is unbelievably stable. It turns very smoothly, and it never locks up. This is one of the best puzzles I've ever made, up there with the new Nebula.See more about the puzzle here:twistypuzzles.com/forum/viewtopic.php?t=39001&e=1
Comboctahedron 2.0 Eitan Cher 2023-10-30 | The Comboctahedron is a Face Turning and Vertex Turning Octahedron.This is a new iteration of a puzzle I first presented back in 2010. It turns much better this time, thanks to an improved mechanism and the addition of magnets to help keep the edge pieces aligned during face turns.
Dial Dino Cube Eitan Cher 2023-07-31 | The Dial Dino Cube is a new puzzle collaboration with Bram Cohen. It is a dino cube with dials in each edge piece which spin when you turn certain corners.
Building an SLS 3D Printed Puzzle Eitan Cher 2023-02-13 | Here's how to prep, assemble, and sticker a puzzle you buy from me at i.Materialise. https://i.materialise.com/en/shop/designer/eitan-cher00:00 Intro00:45 Opening the sinterbox02:05 Sorting the pieces05:52 Clean up the parts11:41 Assemble the core13:19 Start typical assembly cycle21:28 Assembly roadmap21:58 Last axis assembly30:15 Done with assembly31:31 Lubrication34:50 Breaking the puzzle in37:39 Putting the caps in40:35 Stickering overview41:53 Tiny stickers44:09 Larger stickers47:25 Puzzle done!
Eitans Nebula - Version 2.0 Eitan Cher 2022-11-19 | Eitan’s Nebula is a double-layered Face Turning Icosahedron. It is one of my proudest achievements in puzzle design, and it is still the largest successful puzzle I have ever designed.Buy one for yourself on my i.Materialise Shop!https://i.materialise.com/en/shop/item/eitan-s-nebula-part-1-of-2https://i.materialise.com/en/shop/item/eitan-s-nebula-part-2-of-2This new version of the Nebula is even better than the one I first presented back in 2014. The turning is spectacular, and the puzzle is much more stable and robust than it used to be. I tweaked the cut geometry to make some of the smallest stickers slightly larger. I also redesigned the corners to have removable caps, allowing access to the screws underneath.
Master FTRD - Version 2.0 Eitan Cher 2022-11-11 | This puzzle is available on my i.Materialise shop here: https://i.materialise.com/en/shop/item/master-ftrdThe old video I took with Brandon, which I mentioned in this video, was accidentally set to Private for some reason, which explains why it never got any views in the 8 years since I uploaded it. You can find that here: youtu.be/BcUrbiCMDAU
FTDI++ Eitan Cher 2022-11-10 | The FTDI++ is a Face Turning Deltoidal Icositetrahedron with two levels of unbandaging. It has 24 turning axes, and it is a jumbling-only puzzle which is notoriously difficult to solve. It has the same axis geometry as the Celtic Cube, the ETRD, and the ETRD++.You can buy a copy on my i.Materialise shop at https://i.materialise.com/en/shop/item/ftdi-plus-plus
ETRD++ Eitan Cher 2022-11-10 | The ETRD++ is an Edge Turning Rhombic Dodecahedron with two levels of unbandaging. It has 24 turning axes that go through the edges of the puzzle, and it is a jumbling-only puzzle. It has the same axis geometry as the Celtic Cube, but its extra cuts make it a very different beast.You can buy a copy on my i.Materialise shop at https://i.materialise.com/en/shop/item/etrd-plus-plus
ETRD - Version 2.0 Eitan Cher 2022-11-10 | The Edge Turning Rhombic Dodecahedron has 24 turning axes that go through the edges of the puzzle. It is a jumbling-only puzzle, which is notoriously difficult to solve. It has the same axis geometry as the Celtic Cube.You can buy a copy on my i.Materialise shop at https://i.materialise.com/en/shop/item/etrd-edge-turning-rhombic-dodecahedron
Eitans i.Materialise Puzzle Shop! Eitan Cher 2022-10-14 | I am happy to announce that I am finally opening a puzzle shop at i.Materialise!Check it out here: https://i.materialise.com/en/shop/designer/eitan-cherHere are the puzzles that will be available to start with:- MegaTwist- GigaTwist- Master Curvy Copter Plus- Celtic Cube- Master Face Turning Rhombic Dodecahedron- Radio Cube 3- ETO+- ETO++(I'm still working on some final details of the shop pages, so not all of these will be showing up on there right away, but they should all be up by sometime this weekend.) All of these puzzles have been recently updated with improved mechanisms, bigger sticker surfaces, and other minor tweaks that I thought were necessary.When you buy a puzzle from my i.Materialise shop, it will arrive inside a Grid Container, like this, and it will be up to you to supply the screws and do the assembly and stickering. The stickers are all available at chewiescustompuzzles.com/stickers. I’ll include a link on each shop page to the appropriate stickers, and information as to what screws that puzzle is designed for.If you prefer not to do the assembly and stickering yourself, I am happy to do that for you, though there will be a substantial extra fee for my time. I’ll include a contact link on each shop page to reach out to me for that.Stay tuned for more additions to my shop in the near future. In the meantime, go check out the shop, and happy puzzling!Eitan
Crazy Rhomdo Plus Eitan Cher 2022-07-02 | This is the Crazy Rhomdo Plus. It is a surprisingly simple modification of MF8's Crazy Doderhombus Plus, with all the same pieces, except for 6 of the centers and 6 center caps.To build your own, here's what you need:1 x MF8 Crazy Doderhombus Plus6 x Trapezoidal 0-Face Centers6 x Trapezoidal 1-Face Centers6 x Trapezoidal CapsYou can buy the MF8 Crazy Doderhombus here: shorturl.at/fltAUYou can find the 3D printable parts for the Crazy Rhomdo Plus on my Thingiverse here: thingiverse.com/thing:5422955And you can read more about it on the Twisty Puzzles forum here: twistypuzzles.com/forum/viewtopic.php?p=417966You can find the improved replacement centers for the Crazy Doderhombus Plus here: thingiverse.com/thing:5419134
ETO+ and ETO++ Eitan Cher 2022-06-01 | I'd like to present two new Edge-Turning Octahedra: The ETO+ and the ETO++I go into some depth about my strategy and mindset for unbandaging a jumbling puzzle, from a purely mechanical point of view. At the 10-minute mark, I stop rambling about mechanisms, and start scrambling. I was quite surprised at how fun it was to scramble the ETO++. The extra unbandaging is unexpectedly liberating. Enjoy!See my post on the twisty puzzles forum for more information: twistypuzzles.com/forum/viewtopic.php?t=37781(For those curious, that thing on my thumb is a brace that is helping me with a joint problem.)
Eitan is back! Eitan Cher 2022-05-30 | I'm back! I've really neglected this channel over the last 8 years, haven't I? Stay tuned for some cool new puzzles I've been making.
Master FTRD Eitan Cher 2014-11-08 | I made this video back in February, but for one reason or another, I just never posted it. Anyways, thank you Brandon Enright for jumping in with info about jumbling!
Dave Litwin juggles Jason Smiths Puzzles Eitan Cher 2014-07-06 | Just a fun moment from the July 5th Bay Area Twisty-Puzzlers meet-up. We got Dave to juggle two Radiolarians (Radiolaria?) and an original shell-mech Pentultimate (all made by Jason Smith).
Eitans Nebula Eitan Cher 2014-02-09 | Eitan's Nebula is a two-layer face-turning icosahedron, with cuts at depths equivalent to Jason Smith's Radiolarian 3 and Radiolarian 4. For more information about the puzzle, take a look at my post on the Twisty Puzzles forum. http://twistypuzzles.com/forum/viewtopic.php?f=15&t=26845&start=0
Master Curvy Copter Plus Eitan Cher 2013-10-12 | A 2-layered edge-turning cube with one level of unbandaging. See the Twisty Puzzles forum for more information.
Indicator Cube 4: The ATV Eitan Cher 2013-06-14 | This is the Indicator Cube 4: The ATV. It's a 4x4 cube with geared wheels inside the edge pieces. It may be available for sale sometime in the next few months.
Dino Starminx Eitan Cher 2012-12-26 | The Dino Starminx is a combination of the Dino Dodecahedron (shallow corner-turns) and the original Starminx (deep face-turns).
Disguised Meson Eitan Cher 2012-12-26 | Here I present two failed puzzles, the Disguised Meson and the Unbandaged Disguised Meson. They are what you get when you transform the helicopter cube in its meson state back into a cube. Unfortunately, since some of the pieces were extended out to make the transformation, the puzzles exhibit severe overhang bandaging, making jumbling turns impossible. Thus it is impossible to get the puzzle back into the original non-meson configuration. Oh well. These things happen.
Radio Cube 3 Eitan Cher 2012-11-07 | The Radio Cube 3 is a cubic transformation of Jason Smith's Radiolarian 3. It has icosahedral cut geometry, and it is slightly shallower-cut than my DeFTI (aka "Eitan's Star" soon to be released by MF8).You can buy a copy of this puzzle on my Shapeways shop for $150. http://shpws.me/m01I
Andrews Hall Grand Orrery 2012 Eitan Cher 2012-05-07 | On May 6, 2012, we unveiled the Andrews Hall Grand Orrery. It is a working model of the Solar System, with linearly-scaled orbital periods and logarithmically-scaled planet radii and orbital radii. I have been working on this project since September of 2011, with a team of 7 other students at Andrews Hall. We designed, built, and installed the orrery ourselves, with the permission and guidance of professors and structural engineers.
Eitans Star - Prototype Eitan Cher 2012-04-19 | This is the prototype of my very first mass produced puzzle: Eitan's Star. It is the same puzzle as my DeFTI from September 2010.Enjoy!
True Master Helicopter Cube ($180 on Shapeways!) Eitan Cher 2012-02-13 | Buy for $180 on Shapeways! http://www.shapeways.com/model/441718/master_helicopter_cube.html?gid=sg33470When I first presented the Master Helicopter Cube in August 2010, people told me that what I had really made was a Master Curvy Copter. So finally, here is a True Master Helicopter Cube. The inner layer cut is completely flat, and the outer layer cut is as close to flat as I could make it without cutting pieces off.I designed this puzzle on SolidWorks, printed it in the WSF material at Shapeways, dyed it using Rit Dye, and stickered it with Mefferts high-quality vinyl that I cut on my university's laser cutter.I am still debating whether to offer this one on Shapeways. The price would be somewhere in the $180 to $230 range. If you think you might buy one at that price, please say so in the comments.Enjoy!Copyright 2012 - Eitan Cher
Fractured Madness Eitan Cher 2011-11-28 | This is my latest puzzle, the Face-Turning Pentagonal Dipyramid.First copy sold on eBay for $235.83. Thank you to all the bidders!Copyright 2011 - Eitan Cher
Scrambling the GigaTwist Eitan Cher 2011-10-14 | Here I am scrambling the GigaTwist. So far, it's proving to be more difficult that the Gigaminx due to the uniqueness of the pieces on the inner ring of each face. They're much harder to move around when there are no 2 identical pieces.I solved it in about 3 hours. It was a very enjoyable puzzle to solve.-Eitan
GigaTwist Eitan Cher 2011-10-11 | GigaTwistby Eitan CherThis is a twisted transformation of a Gigaminx. It is exactly the same size as the MegaTwist, which I posted a few weeks ago.Sold on eBay for $265.Thank you to all the bidders!
MegaTwist (Now on Shapeways!) Eitan Cher 2011-09-26 | MegaTwistby Eitan (pirsquared)Now available on Shapeways as a DIY kit for $99. http://www.shapeways.com/shops/puzzlesbyeitanCopyright 2011 - Eitan Cher
Twisted Cubes on Shapeways! Eitan Cher 2011-07-21 | The Twisted Cubes will soon be available on my Shapeways Shop:http://www.shapeways.com/shops/puzzlesbyeitanI'll put an annotation at the beginning of the video when they are up.
Twisted Starminx Eitan Cher 2011-05-13 | Due to the craziness of junior year of engineering school, it's been quite a while since my last new puzzle. Well, now the semester is over, so it's time for puzzles! Here is the Twisted Starminx, a shape modification of a Starminx (originally made by Aleh, then Drewseph, and then TomZ).Now on eBay! Auction ends May 29 at 6:27am PDT.http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330567653933&ssPageName=STRK:MESELX:IT#ht_926wt_1092Copyright 2011 - Eitan Cher
Twisty Puzzles à la Vi Eitan Cher 2011-03-27 | Here is how I design and build twisty puzzles. From the basics of SolidWorks to the great feeling of holding in my hand something I designed, this video is proof that product design is an absolute blast.Thanks to Kody, Kelsey, Carl, Laura, David, Drew, Eric (vertigo1123), Garrett (aceospades1250), and Tom (TomPuzzle) for all the feedback and advice.Thanks to Vi Hart (vihart) for the inspiration for the video.Dodecahedron tutorial on Solidworker.com: http://www.solidworker.com/14/dodecahedron
Compound Cubes Eitan Cher 2011-02-05 | This puzzle is in the shape of M.C. Escher's compound of 3 cubes. I will be selling both stickerable and dyeable DIY kits of this puzzle on Shapeways sometime in the next few weeks.Enjoy!
Celtic Cube Eitan Cher 2011-01-20 | This is my latest twisty puzzle. It is a cubic transformation of the Face-Turning Deltoidal Icositetrahedron I made a few months ago. Sold on eBay for $515. Thank you to all the bidders, and congratulations to the winner!
Edge-Turning Rhombic Dodecahedron Eitan Cher 2010-12-18 | This is a Rhombic Dodecahedron shape modification of the Face-Turning Deltoidal Icositetrahedron. Buy an Edge-Turning Octahedron at my i.Materialize Shop!https://i.materialise.com/en/shop/item/etrd-edge-turning-rhombic-dodecahedronEnjoy!
Edge-Turning Octahedron Eitan Cher 2010-12-07 | This puzzle completes the set of all the general types of twisty puzzles that can be made from the platonic solids (face-turning, vertex-turning, and edge-turning). All of them have now been made, many of them mass-produced.CORRECTION: I was mistaken about this puzzle creating the milestone, as the 24-octahedron already fills the edge-turning octahedron slot. Oh well. It's a great puzzle in any case!This puzzle is now available as a DIY kit for $99.99 at my Shapeways shop:http://www.shapeways.com/shops/puzzlesbyeitanYou must order all 3 parts to receive the full puzzle.Enjoy!
Face-Turning Deltoidal Icositetrahedron Eitan Cher 2010-11-08 | This puzzle will probably go up for sale on Shapeways sometime in mid-December. I am not sure on the price yet, as I am still doing a few finishing touches to the larger version. The reason for the larger version is that the small size of this first prototype made it pretty hard to turn at first. A larger one will be easier to grip.Enjoy!Copyright November 2010 by Eitan Cher
Comboctahedron - by Eitan Eitan Cher 2010-10-17 | This is my newest twisty puzzle. It is the first Vertex- and Face-Turning Octahedron. It is a combination of the two octahedral puzzles that have been mass produced.I will put a link here when I put this puzzle up on eBay
DeFTI - by Eitan Eitan Cher 2010-09-22 | The DeFTI (Deeper Face-Turning Icosahedron) is a slightly deeper-cut FTI.. Now on eBay! Here's the link for the auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330478908594&ssPageName=STRK:MESELX:IT#ht_990wt_967 Enjoy!
Master Curvy Copter ($180 on Shapeways!) Eitan Cher 2010-08-03 | The Master Curvy Copter (Originally the Master Helicopter Cube) is now available on Shapeways! http://www.shapeways.com/model/479151/master_curvy_copter.html?gid=sg33470This is the first-ever multi-layer jumbling puzzle.Copyright 2010 - Eitan Cher
Groove Cube Twisty Puzzles Forum Summer Puzzle Building Competition Eitan Cher 2010-08-03 | Groove Cube This is my entry into the TwistyPuzzles.com forum Summer Puzzle-Building Competition. Here's a link to where you can buy it! http://www.shapeways.com/model/137042/groove_cube.html Be sure to send me a youtube message when you order one, so that I can send you all the info you need to correctly assemble it. Enjoy!
More Madness - Review Eitan Cher 2010-07-08 | Last week I finally gave in and ordered a puzzle from Oskar van Deventer's Shapeways shop. Here it is! I am also planning to order the print of my Master Helicopter sometime in the near future (i.e. in the next week or so). Here's a link to Oskar's video of this puzzle: http://www.youtube.com/watch?v=I591vVpUWds
Pascals Jumble Eitan Cher 2010-06-12 | This is a flat twisty puzzle made on a laser cutter. The puzzle has the first 8 rows of Pascal's Triangle on it. For more information about Pascal's Triangle, check it out on Wikipedia: http://en.wikipedia.org/wiki/Pascal%27s_triangle I will be selling this puzzle on eBay to help support a friend of mine who is participating in the Avon Walk for Breast Cancer in Colorado at the end of June. Here's a link to the auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330442983793#ht_794wt_1022 Enjoy!
Eitans Senior Barrel Eitan Cher 2010-04-12 | This is my latest puzzle modification. It is the next logical step up from the Junior Barrel, which can be seen here: http://www.youtube.com/watch?v=Lr_GmEZ1OpYThe three cylindrical sections turn in multiples of 90 degrees, and the top and bottom layers turn in multiples of 120 degrees.I will post here when the puzzle goes up on eBay.Enjoy!
