3D Printing, CNC & Maker Projects Videos Hacker News Recommends

demo#241

Building a realistic artificial sun (for dark winter days)

DIY Perks

“The result is quite stunning. I've never seen anything like it.”

9 HN recommenders · 2020–2025

talk#836

clojure.core/typing - Matt Adereth

ClojureTV

“it is a fantastic talk but the part related to this starts at 17:35”

4 HN recommenders · 2016–2023

demo#1015

Brick Assembly

Ancient

“This is a mind blowing level of miniaturization”

4 HN recommenders · 2023–2025

course#1172

Building Prototypes Dan Gelbart part 1 of 18 Introduction

Dan Gelbart

“series by Dan Gelbart on YouTube which is pure gold”

4 HN recommenders · 2015–2022

other#1220

Giant Robot Project, Part 1

Jaimie Stuff

“I'm afraid I've wrecked what's left of the work day as I follow the saga.”

3 HN recommenders · 2011–2020

tutorial#1286

FreeCAD 0.20 For Beginners | 1 | Setup , preferences and navigation | Easy Tutorial for Learning CAD

MangoJelly Solutions for FreeCAD

“MangoJelly does an excellent work on that.”

3 HN recommenders · 2023–2024

tutorial#1427

Telescope Building with John Dobson

Dobson Astro-Initiatives

“Here's a 90 minute youtube video on how to build one, with John Dobson himself”

4 HN recommenders · 2017–2025

course#1432

Basic Beginners FreeCAD v1.0 : Introduction to Course

MangoJelly Solutions for FreeCAD

“MangoJelly has done an amazing job in churning out high quality tutorials for FreeCAD”

3 HN recommenders · 2025

tutorial#1532

Turning Smashed TVs into Realistic Artificial Daylight

DIY Perks

“The result is quite stunning. I've never seen anything like it.”

3 HN recommenders · 2019–2025

tutorial#1557

World’s Best Speakers!

Tech Ingredients

“I built my own speakers for under $200 and I honestly think they are some of the best I've ever heard for a personal setup.”

3 HN recommenders · 2020–2025

explainer#1610

Here's What's Preventing You From Finishing Projects

Zack Freedman

“the rubric he uses is sound for programmer-y stuff too”

3 HN recommenders · 2021–2023

demo#1901

TWO Unpickable (?) Locks for Lock Picking Lawyer!

Stuff Made Here

“Together they give a whole new understanding of lock design and picking methods.”

3 HN recommenders · 2021–2022

tutorial#1902

Weird webcam mod that enables eye-contact conversation

DIY Perks

“it's a really interesting DIY solution to ensuring eye contact when video conferencing.”

5 HN recommenders · 2020–2026

demo#2172

I sent robot forgeries to a handwriting expert

Stuff Made Here

“really cool video by Stuff Made Here explaining how he tried to make 'realistic' handwritten forgeries with a pen plotter”

3 HN recommenders · 2024–2026

demo#2278

Gridfinity: Your Ultimate Modular Workshop is FREE!

Zack Freedman

“Watching Zack's original video on the concept really helps to cement why this exists.”

3 HN recommenders · 2022–2024

explainer#2458

Magnetohydrodynamics - Propelling Liquid Metal with Magnets!

Tech Ingredients

“There's a great video from one of my favorite YouTube channels about Magnetohydrodynamic drives.”

2 HN recommenders · 2018–2023

lecture#2488

Building Prototypes Dan Gelbart part 10 of 18 Flexures

Dan Gelbart

“He starts off with a $10 piece of aluminum that took maybe an hour or two to make”

2 HN recommenders · 2015–2023

demo#2608

DIY haptic input knob: BLDC motor + round LCD

scottbez1

“I made a rotary input device that provides software-defined "virtual" detents and end-stops, implemented using a BLDC gimbal motor.”

2 HN recommenders · 2023–2026

tutorial#2809

The Secret Life of components. A series of eight guides for designers and makers by Tim Hunkin

tim hunkin

“It is really great stuff if you enjoy building things.”

2 HN recommenders · 2021–2025

demo#2866

Are WILD cockatoos smart enough to solve this puzzle?

Maker's Muse

“it's really remarkable to watch them figure it out”

2 HN recommenders · 2021–2025

lecture#3030

Building Prototypes Dan Gelbart part 18 of 18 Design

Dan Gelbart

“He starts off with a $10 piece of aluminum that took maybe an hour or two to make”

2 HN recommenders · 2015–2024

demo#3032

Liquid Sand Hot Tub- Fluidized air bed

Mark Rober

“See this fun fluidized sand-filled jacuzzi”

2 HN recommenders · 2018–2025

explainer#3159

What is a Geometry Kernel? C3D vs ACIS vs Parasolid

nickkallen1

“Mentions an interesting video[2] going through the commercial geometry kernel options and their resp. limitations”

3 HN recommenders · 2023–2025

explainer#3293

The Material Science of Metal 3D Printing

Real Engineering

“Great Real Engineering video with a lot of discussion of the issues with material properties, crystalline structure, and fatigue cracks”

3 HN recommenders · 2019–2024

demo#3329

The 3D-Printed Curta Calculator

Adam Savage’s Tested

“Adam unboxes his 3D-printed Curta on YouTube at”

2 HN recommenders · 2017–2025

demo#3357

Firing the Lorentz Plasma Cannon

LightningOnDemand

“You might enjoy Lightning On Demand's Lorentz Cannon”

2 HN recommenders · 2025–2026

demo#3432

High precision air bearing CNC lathe and grinder

Dan Gelbart

“If you enjoy absurd precision and accuracy, have a look at Dan Gelbart's older videos”

2 HN recommenders · 2019–2025

tutorial#3533

Fantastic DIY Speakers for less than $30!

Tech Ingredients

“where he goes into all sorts of experiments he ran on the exciters to find the right design.”

2 HN recommenders · 2018–2023

demo#3562

See in complete darkness with touch

Stuff Made Here

“'Stuff Made Here' made a 12-point display using two motors.”

1 HN recommenders · 2020–2023

demo#3579

I put Koenigsegg’s freevalve tech on a Miata... It runs and drives!

Wesley Kagan

1 HN recommenders · 2021–2026

demo#3638

DIY Scanning Electron Microscope - Overview

Applied Science

“Ben Karsnow's channel is really inspiring. With every video, he pushes the limits of what I thought it was possible to do in your garage.”

1 HN recommenders · 2015–2025

demo#3813

Linear Book Scanner

Google TechTalks

“Google developed a system called the "cheese grater" and open-sourced the plans / design”

1 HN recommenders · 2015–2021

other#3817

Project "Iron Auntie" Success! Helping one of the last polio survivors in an iron lung.

Naomi Wu

1 HN recommenders · 2020–2022

demo#3948

Storing Solar Power on my ROOF!!!

Quint BUILDs

“I find him entertaining.”

2 HN recommenders · 2022–2025

demo#3973

Computational Design of Mechanical Characters

DisneyResearchHub

“Here's a good Siggraph 2013 demo about "Computational Design of Mechanical Characters" from Disney”

1 HN recommenders · 2013–2025

demo#4110

Build a DIY full-frame CCD camera

Wenting Channel

“I was hoping to see more advanced projects and I found it in this channel.”

1 HN recommenders · 2023–2024

comedy#4179

TRUCKLA: The world's first Tesla pickup truck

Simone Giertz

“There's an awesome Tesla pickup truck mod that I'd buy long before the Cybertruck”

1 HN recommenders · 2021–2023

demo#4202

I Landed A Rocket Like SpaceX - Scout F

BPS.space

“Would recommend, it’s been very cool to follow his progress over the years.”

1 HN recommenders · 2022–2025

tutorial#4246

Converting devices to USB Type-C

DIY Perks

“made a video about converting USB connectors to USB C which is very well done”

1 HN recommenders · 2020–2024

demo#4330

Making an unpickable lock. Calling locksmiths

Stuff Made Here

“Together they give a whole new understanding of lock design and picking methods.”

1 HN recommenders · 2021–2022

demo#4345

Glitter Bomb 2.0 vs Porch Pirates

Mark Rober

“Obligatory links to YouTuber Mark Rober's quest for vengeance against porch pirates”

1 HN recommenders · 2022–2024

demo#4421

HomeMade Electric Airplane

PeterSripol

“If anyone is interested in this kind of stuff (fiberglassing fuselages, building cockpits...)”

1 HN recommenders · 2018–2022

demo#4445

ROTATING DETONATION ENGINE

Integza

1 HN recommenders · 2022–2025

demo#4474

Glitterbomb 3.0 vs. Porch Pirates

Mark Rober

“the engineering is seriously impressive”

1 HN recommenders · 2020–2024

explainer#4553

The Genius of 3D Printed Rockets

Veritasium

“Veritasium did a video on their rocket”

1 HN recommenders · 2022–2024

demo#4692

Measure the mass of an eyelash with a DIY microbalance

Applied Science

“YouTube just dug up a a real nice breakdown that Ben Krasnow did”

1 HN recommenders · 2018–2026

tutorial#4734

How to Make/Build a Lifter or Ionocraft

RimstarOrg

“Guy explains it pretty well”

1 HN recommenders · 2016–2022

demo#4790

Adam Savage's One Day Builds: Refrigerated Cooling Suit!

Adam Savage’s Tested

“Fascinating design/build video.”

1 HN recommenders · 2020–2023