Download Best of Make, Volume 2: 65 Projects and Skill Builders from the Pages of Make: PDF

TitleBest of Make, Volume 2: 65 Projects and Skill Builders from the Pages of Make:
LanguageEnglish
File Size33.3 MB
Total Pages388
Table of Contents
                            Contents
We’re All Makers
The Maker's Bill of Rights
Right to Repair
Part 1: Workshops and Tools
	The Ultimate Tool Buying Guide
	Building the Barrage Garage
	Choose Your Tools
	Stock Your Shop
	The Safe Workshop
	Lost Screw Finder
	Mini Fume Extractor
	Understanding Basic Woodworking Tools
	Japanese Toolbox
	Wilderness Workshop
Part 2: Electronics
	Your Electronics Workbench
	Servomotors
	Listening to Satellites
	The Eclectic Electret Microphone
	The Bobbinator
	Keybanging
	Surface Mount Soldering
	Desktop Digital Geiger Counter
Part 3: Microcontrollers and Microcomputers
	Million Color HSL Flashlight
	Hack Electronic Pushbuttons
	X10 Arduino Macro Module
	Advanced Arduino Sound Synthesis
	Raspberry Pirate Radio
	How to Bake am Onion Pi
Part 4: 3D Printing and CNC Fabrication
	CNC Maker Bench
	The Skinny on End Mills
	Cyberpunk Spikes
	3D-Printed Pinhole Camera
	CNC Air Raid Siren
Part 5: Robots and Drones
	Beetlebot
	My Robot, MAKEY
	How To Build CofeeBots
	Anatomy of a Drone
	Finding Your Way with GPS
	Build Your First Tricopter
	The HandyCopter UAV
Part 6: Music and Audio
	Traditional Cigar Box Guitar
	Squelette, the Bare-Bones Amplifier
	Laser Harp
	Solar Xylophone
	MonoBox Powered Speaker
	Electronic Drum Kit
Part 7: Photgraphy and Video
	Spin the Birdie
	Helium Balloon Imaging “Satellite”
	Looking at the Low End
	Go Green!
	Brownie Pan LED Light Panel
	Glass Bead Projection Screen
	Homebrew Digital 3d Movies
Part 8: Fun and Games
	Retro R/C Racer
	The Most Useless Machine
	The Atlatl
	G-Meter and Altimeter
	Living Room Baja Buggies
	Boom Stick
	Wooden Mini Yacht
Part 9: Crafts and Wearables
	Sous Vide Immersion Cooker
	Making Bar Soap
	Three-Day Kimchi
	Luminous Lowtops
	Flora NeoGeo Watch
	The Chameleon Bag
	Pipe Dreams
	DIY Conductive Ink
                        
Document Text Contents
Page 1




THE BEST OFVolume 2 >> 65 Projects & Skill Builders>> Diagrams, step-by-steps, and resources
for making your
favorite projects!THE BEST
OFVolume 2from the pages of Make:>> >> 380 pages of diagrams, step-by-steps,
and resources
for making your
favorite projects!>> Kick your creativity into high gear! Get inspired by fun projects gleaned from 8 years of Make: magazine.
Hands-on instructions and hundreds of
beautiful photos and illustrations show
you the way to make your own great
creations! BEETLEBOT * TRICOPTER * 3D-PRINTED PINHOLE CAMERA * LASER HARP * RETRO R/C RACER * RASPBERRY PIRATE RADIO *
CYBERPUNK SPIKES * SOUS VIDE IMMERSION COOKER * THE
MOST USELESS MACHINE * MAKING BAR SOAP * COFFEEBOTS *
LUMINOUS LOWTOPS * BOOM STICK * AND MORE! fiThe kind of magazine that would impress MacGyver.fl ŒSan Francisco ChronicleTHE BEST
OF65 Projectsfrom the pages of Make:>> US $29.99 CAN $34.99ISBN: 978-1-68045-032-3
BofMAKE2 1.4.indd 18/6/15 4:52 PM


Page 2




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Page 387




Mix up a homemade batch using
some basic chemistry skills
WRITTEN AND PHOTOG
RAPHED BY
JO
RDAN BUNKE
RTHANKS TO RECENT SC
IEN˜TIFIC AD
VANCES, YOU CAN
BUY CONDUCT
IVE
INKS
IN
THE FORM OF PENS, PA
INTS,

AND E
VEN PR
INTER CAR
˜TRIDGES,
but have you ever
wondered if you could make
your own?
You can, and following a simple
process developed by the Univer
-sity of Illinois Urbana-Champaign
Materials Research Laboratory,

it˚s actually quite easy to produce

the conductive ink at home.
The following steps have been
adapted from the UIUC paper titled

fiReactive Silver Inks for Patterning

High-Conductivity Features at Mild

Temperatures,fl and have been

simplified for the amateur chemist.
PREPARAT
IONClean all glassware and tools and

lay them out on your work surface.

It is important to read through all

of the steps, and make sure that

you understand them thoroughly

before beginning .
1.
MAKE A
VORTEX M
IXERRather than using an expensive

laboratory vortex mixer, you can
make your own using a 2" bolt and a

circular piece of wood.
Cut a circle approximately 2½" in
diameter from a piece of ½" thick

wood. Drill a centered hole large

enough to fit the shaft of the 2"

bolt. Drill a second ½" hole halfway

into the wood, slightly off-center

and overlapping the centered hole

(Figure
A).Place the 2" bolt in a bench vise,
and then use a hacksaw to remove

the bolt head. Insert the bolt shaft

into the center hole until it is flush

with the bottom of the ½" hole, and

then secure it with hot glue.
2.
MAKE THE
INKPour roughly 3mL of ammonium

hydroxide into a glass beaker.

Using a dispensing syringe, draw

exactly 2.5mL out of the beaker

and deposit it into the test tube

(Figure
B).Place the weight boat on a digital
scale and tare the scale. Measure

out exactly 1g of silver acetate

powder (Figure
C) and pour it into
the test tube.
Insert the bolt of your home
-made vortex mixer into the electric

drill. Holding the top of the test
ABCEFDCAUTION: The chemicals used are strong-smelling,
corrosive, and can stain skin and clothes. You must wear
chemical-splash safety goggles, neoprene gloves, a long-

sleeve shirt, pants, and close-toed shoes. Due to the fumes

created, this project must be done outside or in a fume hood.
•šž˝€
˝›””



Page 388




tube firmly, place the base of the test
tube against the hole in the vortex mixer
(Figure
D). Slowly increase the speed of
the drill until a vortex appears in the test

tube, mix for 15 seconds, then set the
test tube aside.
Pour approximately 0.5mL of formic
acid into a second glass beaker. Using

a new dispensing syringe, draw exactly

0.2mL of formic acid out of the beaker

(Figure
E).Drip one drop of formic acid into the
mixed solution in the test tube (Figure
F),
then vortex-mix using the same method

from step 2. Repeat this process until all

0.2mL of formic acid has been mixed.
After mixing, the solution will be a gray
or black color. Place a stopper in the top of

the test tube, and set the test tube aside to

react for at least 12 hours (Figure
G).3.
FILTER THE
INKAfter 12 hours, the solution should look

clear with gray sediment of silver particles

in the bottom (Figure
H). In order to use
the ink in an inkjet printer or airbrush,

these particles must be filtered out to
avoid clogging.
Remove the plunger from a new dis
-pensing syringe, and place a 0.2µm syringe

filter onto the syringe tip. Fill the syringe

with the prefiltered solution, and replace

the syringe plunger (Figure
I).Pressing slowly but firmly on the
plunger, force the solution through the
filter and into a small glass vial for storage

(Figure
J).4.
USING THE
INKBefore using the ink, it˚s important to

choose a suitable material to deposit it

onto. In order to boost the conductivity of

the ink, it must be heated to 90°C (192°F),

so any material you choose must be able

to withstand at least that much heat. Using

this ink on porous materials such as paper

or fabric will not result in a conductive

coating, so it is recommended that the

material have a smooth surface.
Using a paintbrush, apply the ink to your
material of choice; a stencil can be used to

create complex patterns. Allow the ink to

dry until it turns to a dull gray color.
Heat the material to 90°C (192°F) for
at least 15 minutes. You can use a toaster

oven or hot plate as a heat source.
TIPS FOR
USEThe ink is quite fragile and will easily

scratch off most materials. To increase

adherence, scuff the target surface be
-
fore ink application. Once the ink is dry,

apply clear nail polish to protect
the traces.
Unfortunately, you can˚t solder onto the
dry ink, as molten solder will leach the

silver coating away. If you have a Circuit
-
Writer silver-based ink pen, you can use

it to create pads on the traces, which can

then be carefully soldered to.
For complete step-by-
step instructions and

photos see
makezine.

com/projects/diy-
conductive-ink
.GHIJCAUTION: Heating in a toaster oven will make the oven unsafe for food preparation.
›”‰
˝˙

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