Lisa PeterDec 25, 2022
Santiago Andrés Triana
#72pencils arranged into four intersecting hexagonal prisms. Took me a bit to figure out how to assemble it after seeing a picture. Original design by mathematician/sculptor George Hart. #Geometry #Pencil
Dec 20, 2022 at 11:12pmWeb
Show threadSantiago Andrés TrianaDec 23, 2022
Here's a link to the original artist of the #72pencils #sculpture, the mathematician George W. Hart, he has MANY more! #Geometry
http://www.georgehart.com/sculpture/pencils.html
72 Pencils

Show threadLgbookwormDec 20, 2022
@repepo Look, we’re twins! Super cool and the uniformity of the pencil erasers is really satisfying to look at.
Show threadnmichaloDec 20, 2022
@repepo Neat! Is there anything holding together beyond gravity?
Show threadSantiago Andrés TrianaDec 20, 2022
@nmichalo there is glue on pencils forming some of the hexagons’ edges, those are the only ones that need to be kept in place.
Show threadJoJaSciPoDec 20, 2022

@repepo

Nice original work, but could you repeat the study with each row of pencils in red, orange, yellow, green, turquoise, blue and violet?

Show threadLīgaDec 22, 2022
@strangetruther @repepo LoL
Show threadRC2014Dec 21, 2022
@repepo
I made one of these 5 years ago (almost to the day!). Yes, a great combination of frustration and satisfaction :)
https://youtu.be/rpUnJnr0pWE
@isleofmandan
72 Pencils

YouTube
Show threadthe outliarDec 21, 2022
@repepo So very cool!
Show threadThe Skylark 🏳️‍⚧️Dec 21, 2022
@repepo do the corner pencils have to be glued or does it hold together?
Show threadAgnesDec 21, 2022
@repepo
Iets voor de kerstdagen😜
Show threadThijs LambrechtDec 21, 2022

@repepo

Matt Parker aka Stand-up Maths made a movie about it too:
https://youtu.be/DelH1S32dOg

How to build a Hexastix in 72 easy steps

YouTube
Show threadTouaregtweetDec 21, 2022
@repepo @Poldermanie Too bad I haven't got enough pencils to try this ... ✏️ ✏️ ✏️ ✏️ ✏️ ✏️ ✏️ ✏️
Show threadPoldermanie des VaderlandsDec 21, 2022
@touaregtweet Misschien ga ik speciaal hiervoor wel (kleur)potloden kopen. En die ga ik dan heel lang laten liggen waarschijnlijk omdat het er niet van komt om dit te maken of omdat het toch te ingewikkeld blijkt te zijn.
Show threadLed By Gilded FoolsDec 23, 2022
@touaregtweet Tagging #RBG #RuthBaderGinsburg
Show threadTouaregtweetDec 23, 2022
@MHowell #RBG
Show threadRaymondDec 21, 2022
@repepo Helluva job
Show threadEd FriesDec 21, 2022
@repepo I want to try this now
Show threadBean ThinkingDec 21, 2022
@repepo A good puzzle - one to ponder over a coffee! Looks good!
Show threadJill 👾Dec 21, 2022
@repepo @joshmillard
Show threadJosh "cortex" MillardDec 21, 2022
@jillithd @repepo ha, very nice, and very where my head has been lately with 3D interlacing notions
Show threadBEpiperDec 21, 2022
@repepo
Lovely, and fascinating.
You may be familiar with the “Leaded” exhibition. It was memorable.
https://www.elizabethschlatter.com/new-page-3
Leaded: The Materiality and Metamorphosis of Graphite — N. ELIZABETH SCHLATTER

N. ELIZABETH SCHLATTER
Show threadmrpieceofworkDec 21, 2022
@[email protected] !!!
Show thread...hukka.Dec 21, 2022
@repepo - Your post solves one of my Christmas gift woes this year. Thank you very much.
Show threadBushbarkDec 22, 2022
@repepo wow, how long did it take to assemble? I would have one behind my ear, one in my mouth to stop from screaming, one stabbed into the couch cushion and the rest would likely be on fire :-) I admire your patience.
Show threadXiuwenDec 22, 2022
@repepo Wow, impressive geometry and craftsmanship 👍👍
Show threadLīgaDec 22, 2022
@repepo wow that's so cool.
Show threadShe WolfDec 23, 2022
@repepo That is just awesome
Show threadSteve LindsayDec 23, 2022
@repepo Very cool. Thanks.
Show threadpsistarpsiiiDec 23, 2022
@repepo @BeamsAndBows seems up your alley
Show threadSeishonagonDec 23, 2022
@repepo @grb090423 no glue?
Show threadTheFatCyclistDec 23, 2022
@repepo how many hands?
Show threadConrad KnauerDec 23, 2022

@repepo Cool! I started making those as a pandemic project when I wasn't going out much. Some variants I experimented with:

"Pretty Pencils"
https://twitter.com/ConradKnauer/status/1259223108138995712

@[email protected] on Twitter

“72 pretty pencils!”

Twitter
Show threadConrad KnauerDec 23, 2022
@repepo Day glow pencils https://twitter.com/ConradKnauer/status/1274720908867825671
@[email protected] on Twitter

“Today's pencil project.”

Twitter
Show threadConrad KnauerDec 23, 2022
@repepo Chonker 244 pencils https://twitter.com/ConradKnauer/status/1273642164405153792
@[email protected] on Twitter

“244 pencils.”

Twitter
Show threadConrad KnauerDec 23, 2022
@repepo 240 pencil tree https://twitter.com/ConradKnauer/status/1256634600610164736
@[email protected] on Twitter

“240 pencils!”

Twitter
Show threadConrad KnauerDec 23, 2022
@repepo And a tennis ball trapped inside a pencil prison ;) https://twitter.com/ConradKnauer/status/1255076033268641792
@[email protected] on Twitter

“Removing 13 pencils allowed me to slip the tennis ball inside; it's slightly smaller than the hollow and so just fits! Here it is all sealed up, illuminated with UV, trapped inside its pencil prison ;)”

Twitter
Show threadCharliDuffy6Dec 23, 2022
@repepo well aren’t you talented. That is an amazing feat, well done.
Show threadAdam FieldsDec 23, 2022
@repepo it’s lovely
Show threadThe Velvet HammerDec 23, 2022
@repepo nice!
Show threadGentleMan GefDec 23, 2022
@repepo Tuvok approves. #Kalto from #StarTrek #Voyager
Show threadRaven LuniDec 23, 2022
@repepo Easiest way would probably be to make a jig for each of the 4 prisms then just slide them together
Show threadthebagusDec 23, 2022
@repepo ooh
Show threadKennethDec 23, 2022
@repepo If this isn't #ActuallyAutistic ...
Show threadDr Sam McLeanDec 24, 2022
@repepo how stable is it?
Show threadSharon Rose 🌹Dec 24, 2022
@repepo @OrigamiMarie does this look like fun?
#Hexastix https://en.m.wikipedia.org/wiki/Hexastix
Hexastix - Wikipedia

Show threadMarie TessierDec 24, 2022
@Althea_syriacus @repepo I made this out of round toothpicks and silicone hair bands in November 2014. This was the maximum size before the bands started slipping off the tapered ends. I started with the level of model in the article, then grew it by sliding in toothpicks. Then once it was at full size, I slid out the inner toothpicks.
Show threadSharon Rose 🌹Dec 24, 2022
@OrigamiMarie
Cool!
@repepo
Show threadnicki xaphania mouse 🐁Dec 24, 2022
@repepo biblically accurate pencil
Show threadPhil AllsoppDec 25, 2022
@repepo Reciprocal framing at its best!