Hello, I'm
Julien Cohen
Additive Manufacturing + Design + Build
Los Angeles, CA
About
I develop engineering solutions for high-performance applications with a focus on production metal additive manufacturing.
I am also a designer/maker/artist playing with digital and analog technologies. Maximally interactive, silly, beautiful, functional, fun.
I post open-source 3D models to Printables and Cults3D, and maintain an archive at Thingiverse.
I spend my free time grappling, reading, cooking and eating, playing DnD or Scrabble, and petting my cat.
Read
Books I've read and reviewed on Goodreads
The Wager: A Tale of Shipwreck, Mutiny and Murder
David Grann
An extraordinary tale of human spirit, the bleakest and most triumphant survivalism imaginable. In Grann’s hands this is not just a naval adventure...
The Nature and Art of Workmanship
David Pye
One of those books that immediately propped open my brain and altered core principles, here on the act of creation; on building and the aesthetic...
Project Hail Mary
Andy Weir
Fun but not great. Weir’s writing is clearly a vehicle for hard sci-fi exploration, and that part of this book is fun to read—how would a life form...
All Tomorrow's Parties (Bridge, #3)
William Gibson
This did feel like the culmination of a worldbuilding arc. Destruction of the old, evolution into the new. Mostly existing characters from Idoru and...
Idoru (Bridge, #2)
William Gibson
All the hallmarks I love about Gibson. A surprisingly good climax and neat denouement (for him) tying up the story. Blackwell is a really fun...
The Aleph and Other Stories
Jorge Luis Borges
Read in the Collected Fictions anthology.The Immortal is immediately one of my favorite short stories ever. Some of the most astounding descriptive...
Breakneck: China's Quest to Engineer the Future
Dan Wang
3.5 stars. A good book with some wonderful writing and research… it would’ve delivered its message more efficiently with 40% less text.Wang’s thesis...
Artificios
Jorge Luis Borges
Read in the Collected Fictions anthology. Though I perhaps enjoyed The Garden of Forking Paths more, Artifices generated more highlights for me, at...
Virtual Light (Bridge, #1)
William Gibson
3.5 stars. I held off on The Bridge trilogy for years, savoring the last of my unread Gibson.It’s a good book. Perhaps not GREAT, the way I felt when...
The Garden of Forking Paths
Jorge Luis Borges
Read in the Collected Fictions anthology.Immediately intoxicating, inchoate, confusing in its style as all now-classic then-revolutionary works are....
A Universal History of Iniquity
Jorge Luis Borges
Read in the Collected Fictions anthology.My first exposure to Borges—fascinating writing though to me pale in comparison to his later (and more...
Abundance
Ezra Klein
[3.5 stars for me]I’m a long-time listener and fan of Ezra Klein’s podcast. For those who’ve spent hours listening to his incisive discourse, this...
Hyperion (Hyperion Cantos, #1)
Dan Simmons
Some books are hard to put down, some books make you say "DAMN, this is good stuff." Hyperion is both.Always funny to review a book like this with a...
Ra
qntm
4.5 stars to the first half, 3 stars to the second half. The story’s scale increases nonlinearly and loses itself in its own complexity.Halfway...
Religion for Atheists: A Non-Believer's Guide to the Uses of Religion
Alain de Botton
Attempts to distill positive lessons and practices from the frameworks of religion (specifically: Christian, Jewish, and Buddhist), and to synthesize...
The English Understand Wool
Helen DeWitt
A lovely novella on taste, on a particularly elite view of patronage and cultivation of relationships, on craftsmanship and the ability to separate...
There Is No Antimemetics Division
qntm
This is the aspirational form of an SCP story. The writing is quite good. The richness and depth of the characters, for science fiction generally and...
Death's End (Remembrance of Earth’s Past, #3)
Liu Cixin
This book's scope expands well beyond the first two in the series. Is that a good thing? Yes and no.It's incredibly clear to me that the author is an...
Catch-22
Joseph Heller
Heaping praise on a book already described as one of the greatest American novels of the century. 4.5 stars.The language is so fantastic, Heller’s...
Children of Memory (Children of Time, #3)
Adrian Tchaikovsky
Each piece of this book is wonderful—the worldbuilding of yet another human terraforming project in the universe Tchaikovsky created through his...
Sandworm: A New Era of Cyberwar and the Hunt for the Kremlin's Most Dangerous Hackers
Andy Greenberg
3.5 stars for me (via the Audible audiobook read by Mark Bramhall). It’s engaging and interesting, I enjoyed it, but it didn’t blow my socks off....
Dark Matter
Blake Crouch
An enjoyable and quick (though somewhat forgettable) read which lives and dies on the strength of its central multiverse travel machine. This is a...
The Power Broker: Robert Moses and the Fall of New York
Robert A. Caro
Few books contain this scope and scale. Few humans, perhaps none in American history, have impacted our infrastructure, our lived experience, the...
Death and What Comes Next (Discworld, #10.5; Death, #1.5)
Terry Pratchett
Tiny lil short story from Pratchett that is just juking my reading stats this year. I love it.Accessible here for anyone else that was unsuccessfully...
Pyramids (Discworld, #7)
Terry Pratchett
This is Grade A Discworld. I loved the insight on Assassin’s Guild training. Pratchett doesn’t do many real “twists” in his novels, but this one is...
The Question of Palestine
Edward W. Said
A highly researched, deeply personal, pointedly erudite compendium of Palestinian-centered thoughts and imaginings on Palestine.Said again and again...
Man's Search for Meaning
Viktor E. Frankl
Perhaps because I read The Unconscious God first, this book didn’t strike me as intensely as I think it does many people. I had already read and...
The Dark Forest (Remembrance of Earth’s Past, #2)
Liu Cixin
A sometimes enjoyable slog for me. A sequel which pales in comparison to The Three Body Problem.I liked some of the big picture plot points—...
Killers of the Flower Moon: The Osage Murders and the Birth of the FBI
David Grann
I listened to the Random House audiobook narrated by Will Patton, Ann Marie Lee, and Danny Campbell, which was wonderfully produced and well paced at...
The Sparrow (The Sparrow, #1)
Mary Doria Russell
Beautifully written. Not easy to make a book about first contact via song and Jesuits in space shine primarily through its humanism and...
Carpe Jugulum (Discworld, #23; Witches, #6)
Terry Pratchett
Some of the best of the Witches series.
Raving
McKenzie Wark
All of the pieces are there but the whole didn’t connect for me. I am a cis white guy so not entirely of the culture described here— although I do,...
Witches Abroad (Discworld #12)
Terry Pratchett
Accidentally read Lords and Ladies before this one, but no harm no foul.It is true and utterly insufficient to say that every Discworld novel is a...
The Making of the Atomic Bomb
Richard Rhodes
Exceptional and exceptionally dense. I read this leading up to Christopher Nolan’s 2023 Oppenheimer film but now have all of Rhodes’ other nonfiction...
Children of Ruin (Children of Time, #2)
Adrian Tchaikovsky
Goddamn, this is exceptional science fiction.The initial third of the story is interesting, a parallel to the first book— worthy on its own but...
Manna
Marshall Brain
Interesting premise and enjoyable worldbuilding of the banality of the AI/Automation takeover, but ultimately a simplified parable on the interaction...
Children of Time (Children of Time, #1)
Adrian Tchaikovsky
Great science fiction. Tchaikovsky holds this millennia-long story together along parallel paths, human and spider, grounding it emotionally along...
Mating in Captivity: Reconciling the Erotic and the Domestic
Esther Perel
I thoroughly enjoyed this book. Not necessarily groundbreaking at any point, but bursting with a combination of psychological/sociological musings...
When Gravity Fails (Marîd Audran, #1)
George Alec Effinger
Possible a case of a groundbreaking/early work in a genre feeling a little stale or known due to the conventions that it itself created. It has all...
The Unconscious God
Viktor E. Frankl
Much of this book is not about God. Instead it is a response and argument against Freudian psychoanalysis which (I gather) was the dominant form of...
This Is How They Tell Me the World Ends: The Cyberweapons Arms Race
Nicole Perlroth
I read Countdown to Zero Day: Stuxnet and the Launch of the World's First Digital Weapon five years ago, and this book was a fantastic follow-up to...
The Cuckoo's Egg: Tracking a Spy Through the Maze of Computer Espionage
Clifford Stoll
This is a wonderful book. The story is an enthralling peek into the 80s computing culture of Unix Wizards, MILNET, and early networks, but it's...
Polysecure: Attachment, Trauma and Consensual Nonmonogamy
Jessica Fern
A useful book for laying out some of the basics of attachment theory and connecting it the spectrum of nonmonogamy in theory and practice. Some of...
Sense and Sensibilia: Reconstructed from the Manuscript Notes by C.J. Warnock
J.L. Austin
I picked this up somewhat at random from a display of used books at a park music event in LA. I do not have an academic background in philosophy and...
Lords and Ladies (Discworld, #14; Witches, #4)
Terry Pratchett
(Whoops I read this before Witches Abroad!)Easily my favorite of the Witches series so far. Every Discworld book is good, but a few of them transcend...
The Swerve: How the World Became Modern
Stephen Greenblatt
3.5 stars for me.Part biography of Poggio Bracciolini and his circle of zealous humanist book hunters, part history on the practice and culture of...
Wyrd Sisters (Discworld, #6; Witches, #2)
Terry Pratchett
As Granny Weatherwax says— “… no worse than most and better than many …”Not my favorite Discworld book, but like every single one an incredible...
God Is Not Great: How Religion Poisons Everything
Christopher Hitchens
Listening to Hitchens speak is a joy like few others on this planet. Listening to him read his own work is entrancing; a silken scythe through the...
Crossing the Chasm: Marketing and Selling High-Tech Products to Mainstream Customers
Geoffrey A. Moore
This is required reading for anyone involved in VC-funded tech startup life. I wish I had read it sooner.Unfortunately, I read it about three weeks...
City of Quartz: Excavating the Future in Los Angeles
Mike Davis
In the author’s words, “City of Quartz … is the biography of a conjuncture: one of those moments, ripe with paradox and non-linearity, when...
The Incal
Alejandro Jodorowsky
I read The Incal forever ago when I first discovered Moebius... as an adult it hits different.I'm not going to say anything new on this seminal work...
The Manager's Path: A Guide for Tech Leaders Navigating Growth and Change
Camille Fournier
Somewhere between a reference textbook and a practical guide for technical management roles. The book takes you through each step in the path from an...
Like Streams to the Ocean: Notes on Ego, Love, and the Things That Make Us Who We Are
Jedidiah Jenkins
This book is beautiful. It’s powerful, haunting, illuminating. A celebration of life and a sad longing for the unknowable. You should read it.
How Buildings Learn: What Happens After They're Built
Stewart Brand
Truly one of the most interesting books I’ve ever read. Stewart Brand’s writing reflects his clear love of “Low Road” architecture— accessible,...
Equal Rites (Discworld, #3; Witches, #1)
Terry Pratchett
Listened to this one on audiobook read by Celia Imrie who did a wonderful job bringing the characters to life.
The Last Continent (Discworld, #22; Rincewind, #6)
Terry Pratchett
More amazing Discworld. Not the strongest in the series for me, but always so good endlessly quotable.“I THINK PERHAPS YOU DO NOT UNDERSTAND....
The Stranger
Albert Camus
This is my first foray into Camus’ work and more broadly into this class of French philosophic literature.This was a quick read on an airplane and...
God Emperor of Dune (Dune #4)
Frank Herbert
4/6 of the way through the main Dune series, and God Emperor presents something much more philosophical than the previous three books. The...
The Coming Insurrection
The Invisible Committee
A fascinating short read. The authors do a wonderful job identifying, describing, and decrying in vivid and eloquent detail the global...
Children of Dune (Dune #3)
Frank Herbert
Broadly I liked Children equally as much as Dune itself, and potentially even more through most of the novel. It fleshes out the world building of...
Dune Messiah (Dune #2)
Frank Herbert
Lacking some of the depth of Dune itself— still an incredible journey on Arrakis with the introduction of some more alien perspectives.
The Prophet
Kahlil Gibran
Truly life changing. A work I will come back to for the rest of my days.
The Science of Discworld (The Science of Discworld, #1)
Terry Pratchett
I stopped about a third of the way through on this one. I'm sure I'll pick it up again and read through a few chapters.I've read a ton of...
Stranger Than We Can Imagine: Making Sense of the Twentieth Century
John Higgs
The second of Higgs’ books I’ve read, following KLF. The two deal with similar themes— where KLF dives into the specifics of that band and confluence...
Something from the Nightside (Nightside, #1)
Simon R. Green
I’ve read the whole series and just re-read this after lending it to a friend. I love the world building, turning hard-boiled detective noire up to...
How the Hippies Saved Physics: Science, Counterculture, and the Quantum Revival
David Kaiser
This was a fascinating book, one that starts by examining physics as an academic discipline in the early 20th century, noting its fundamental...
KLF: Chaos Magic Music Money
J.M.R. Higgs
I came to this book after hearing Higgs on the Ezra Klein podcast, and his opening comment to Higgs is much more understandable now: “just who the...
Speed Tribes: Days and Nights with Japan's Next Generation
Karl Taro Greenfeld
Fascinating exploration of Japan’s youth subcultures in the late 80s-90s. Structurally it is a collection of vignettes, each diving into a particular...
Raising Steam (Discworld, #40; Moist von Lipwig, #3)
Terry Pratchett
This is a great Discworld novel. I mean, every book in the series is an entertaining read— satirical and entertaining and humorous, surprisingly deep...
Agency (Jackpot #2)
William Gibson
Look, Gibson is one of my favorite authors. Period. This one didn’t grab me like many of his previous novels. I love the continued worldbuilding...
The Culture Code: The Secrets of Highly Successful Groups
Daniel Coyle
I can honestly say this is one of the best non-fiction books I’ve ever read. Daniel Coyle shepherds you through the world of highly successful groups...
The End is Always Near: Apocalyptic Moments, from the Bronze Age Collapse to Nuclear Near Misses
Dan Carlin
Note: I listened to this on Audiobook read by the author.Long time listeners of Dan Carlin’s Hardcore History podcast will immediately recognize the...
The Goal: A Process of Ongoing Improvement
Eliyahu M. Goldratt
This book was recommended to me by multiple unconnected colleagues and friends in the advanced manufacturing field. I’m about 30 years late, but this...
Ignition!: An informal history of liquid rocket propellants
John Drury Clark
FYI: “Ignition” is now widely available to download online for free in .pdf version.Any history of science book with a forward written by Isaac...
How to Change Your Mind: The New Science of Psychedelics
Michael Pollan
"And so what began as one of the most shattering experiences of my life ended half an hour later with a wan smile."Pollan approaches the topic of...
Fall; or, Dodge in Hell
Neal Stephenson
One of the more gripping novels I've read in a long time, from one of my favorite authors.In true Stephenson fashion, the worldbuilding is...
Second Foundation (Foundation, #3)
Isaac Asimov
I'm struggling to put my finger on why I love this series so much. As described in countless reviews and by Asimov himself, the books contain very...
Foundation and Empire (Foundation, #2)
Isaac Asimov
The saga of the Foundation continues as the galactic empire has crumbled to provincial ruin and feudal anarchy.Considering the 1952 publication date...
Fear and Loathing in Las Vegas: A Savage Journey to the Heart of the American Dream
Hunter S. Thompson
An absolute classic, of course. Dive into the beautiful, perverted, psychedelic, gloriously unhinged mind of the original Gonzo journalist.
Foundation (Foundation, #1)
Isaac Asimov
I tried to read this when I was 12 or 13 after devouring the rest of Asimov's popular science fiction, and it didn't click for me. I'm finally...
1493: Uncovering the New World Columbus Created
Charles C. Mann
This book was recommended on the excellent Context podcast by Brad Harris, whose effusive praise made me reprioritize my reading list.1493 is not...
Rats, Lice, and History: A Chronicle of Pestilence and Plagues
Hans Zinsser
Written in 1935 by a highly regarded Harvard biologist who had never before published on history, this book is nominally a "biography" of Typhus...
Other Minds
Peter Godfrey-Smith
Listened to the Audiobook version, which was well narrated.Extremely interesting insight into cephalopod biology and evolution, branching out into...
Models
3D models available for download on Printables and Cults3D
A Better Clamping Headphone Holder 3x Cable Storage Designs
Unicorn Skull
Dnd Dice Chest V4 Print in Place Hinges and Threads No Supports
Prusa Mk3 Drop in 608 Bearing Spool Holder
Spiral Vase Bambu P1 X1 Poop Chute Optimized for Min Time and Material Magnet
Adesso Mkb 135b Keyboard Tilt Leg Foot
Star of David Tree Topper Julcoh
Flsun Sr 5015 Blower Fan Adapter Improved
Terra Cotta Italian Mask
Extended Universal Tripod Mount
Crown Flat Bottom 3d Print Optimized