Files for a slim and small metal casting flask.
Locks connect to the flask halves (cope/drag) via M3 bolts and nuts.  You could print and glue a 3mm peg to attach them for good.

Print:
(2) Cope_Drag
(2) lock1
(2) lock2

BoM:
(4) M3 bolt
(4) M3 nut

Small Metal Casting Flask

Cope_Drag

Flask Assembly Example (Do Not Print)

Lock 1

Lock 2

Turn your excess energy from piloting your body in meat-space into a small amount of portable electrical power for your cyberspace devices.  A wearable kinetic energy harvester that combines cutting-edge shake flashlight technology with a USB power bank.  

Now your fist bumps, walking, running, and even doge can be used to generate power.  Better yet, you can pre-charge your power bank via micro-usb before heading out, allowing your motion to slowly trickle charge your battery.  Power out is by USB-A (but can be modified), allowing the powering of other wearable devices.  Mounting uses either 3d printed straps, commercially available Velcro straps, or 20mm NATO watch straps.  

[Check out my other projects on YouTube](https://www.youtube.com/repeatedfailure) 😊

**Safety Warnings:**
-Soldering can be dangerous, follow proper safety precautions and have supervision if necessary
-Neodymium magnets can cause serious injury if body parts are accidentally pinched between two magnets
-Keep Neodymium magnets away from children and implanted medical devices (pacemakers, ICDs, etc)
-Nickle magnet coatings can trigger nickel allergies

[**Assembly Instructions:**](https://docs.google.com/document/d/1mVDkR8Zb_DvUzhroh4qBWzkZmIHvOMgEs0tXtQZrQn0/edit?usp=sharing
)

**Bill of Materials:**
_Main Body Components:_
Housing:
(1) Body1
(1) Body_2

_Core Tube:_
(2) CoilSpacer
(1) CoreTube
(2) EndCap
(2) MagnetSpacer

_Additional components for the main body include:_
(1) [K&J Magnetics DCX0](https://www.kjmagnetics.com/proddetail.asp?prod=DCX0) 3/4" dia. x 1" thick Neodymium magnet 
(2) [K&J Magnetics DC2](https://www.kjmagnetics.com/proddetail.asp?prod=Dc2) 3/4" dia. x 1/8" thick Neodymium magnet  

(1) Spool of 30 AWG Magnet wire
https://www.amazon.com/dp/B07JBQQR38
(4) 1N4001 Diodes (or equivalent) (or full wave rectifier of choice)
https://www.adafruit.com/product/755

(1) TP4056 Lithium battery Charger Module (or equivalent, most use 03962A chips)
https://www.amazon.com/Mudder-Pieces-Charging-Battery-Protection/dp/B087Q915LF

(1) TE110 3.7V to 5V step up converter (or equivalent)
https://www.amazon.com/dp/B07YYMNJ1J

(1) 3.7V protected battery of choice, 18650 sized or smaller (battery casing should not be magnetic so as to not interfere with the core magnet movement, most 18650 cells are sadly magnetic)
https://www.adafruit.com/product/1570

(1) Small Piece of Perf Board, roughly 6x6 (or equivalent)
https://amazon.com/dp/B07VX79RL6/

Solid Core Jumper Wire ~22 gauge (link provided only for example)
https://www.amazon.com/dp/B088KQFHV7

_Optional Components:_

3D Printed Straps: 
(2) WristStraps, Print in a durable, skin-safe flexible filament such as TPU, Nylon, NinjaFlex
(2) Clasps, Print in a durable, skin-safe filament such as PLA+

Velcro Wrist Straps:
https://www.amazon.com/gp/product/B071DGMNMX/

_Tools:_
Hot Glue Gun
Soldering station (though twist & tape is possible, but not advised))
lighter

Optional Tools:
Drill & Tape
Super Glue
Sand paper or file
Dry lube

Jerk Juice: Wearable Kinetic Energy Generator for #HalloWearables

Assembly(DoNotPrint).stl

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Small Metal Casting Flask

Jerk Juice: Wearable Kinetic Energy Generator for #HalloWearables