Battery powered hand warmer

This is my first instructable so be kind. I wanted to make a hand warmer that was battery powered and rechargeable. I welcome any and all criticism. If you have any questions please feel free to ask.

Step 1: Parts List

Battery powered hand warmer
Battery powered hand warmer
Battery powered hand warmer

Tools & Parts

  • Heat resistant tape
  • Hot glue gun
  • knife
  • Soldering iron
  • Balsa wood
  • 28 awg wire (about three feet)
  • Switch
  • AA battery holder
  • Cover cloth
  • AA batteries

    Step 2: Prep Work

    Battery powered hand warmer
    Battery powered hand warmer
    Battery powered hand warmer
  • Start by outlining the battery holder on the balsa wood with a pencil. You will want to leave about 1/2 inch extra on the length to make room for the switch.
  • Cut the stenciled rectangle out with a knife.
  • Take 3 ft. of wire (I used 28 gauge copper bead wire) and wrap it around the wood (be sure to keep the wires from touching as you spiral it across the balsa).
  • Tape the ends of the wire with a heat resistant tape to the wood.

    Step 3: Install and Drive on!

    Battery powered hand warmer
    Battery powered hand warmer

  • After finding a suitable place for the copper wire heating source. You will need to cut an appropriate slot for the switch.
  • After prepping the switch, glue in place with either hot glue or "CA".

    Step 4: Glue and Solder

    Battery powered hand warmer
    Battery powered hand warmer
    Battery powered hand warmer

  • Solder all connections in place and prep for the cloth cover. (heat resistant tape is amazing at this stage)!!!

    Step 5: Finish with Hot Glue

    Battery powered hand warmer
    Battery powered hand warmer
  • Hot glue the cloth to cover the heating coils.
  • Make sure to wrap fully around the heating coils(Don't worry, the coils should not produce enough heat to cause harm... theoretically around 100 -140 degrees Fahrenheit)
  • After the cloth is secure, hot glue the heating aspect to the battery holder.
  • It should last between 1 and 2 hrs.
  • Enjoy the warmth during the winter!!!!!!

    (Disclaimer: Ensure to properly check connections and aggregate temperature).

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