Soldering

Safety First:
ONLY SOLDER WITH TEACHER PERMISSION

When soldering, always:

Wear protective gear (e.g., safety glasses, heat-resistant gloves).
Work in a well-ventilated area or use fume extraction to avoid inhaling fumes.
Handle hot tools with care to avoid burns.

If using leaded solder:

Avoid skin contact with solder or flux. Wash your hands thoroughly after handling.
Never eat or drink while soldering to prevent ingestion of lead particles.
Dispose of solder waste and dross in the designated hazardous waste container, as lead is toxic to the environment.

In case of burns, immediately cool the affected area with running cold water for at least 10 minutes. Seek medical attention if necessary.

Your teacher will provide additional health and safety details when you begin this unit.

Soldering Tasks

Task 1: Strip Board Soldering

In this task you will be preparing solder quality for a circuit board. The task is simple, Solder 5 resistors next to each other on a Vero Board without solder spilling into either the next row or hole.

Please show your teacher your soldering every two resistors

Resistors must be bent at 90 degree angles

Task 2: Cube Creation

Over the next 3 weeks you will be working through creating a soldering cube.

Solder two resistors together (make sure the tin the resistors before trying to combine).
Use pliers to bend in half, then repeat step 1 until you have enough to make the bottom of the cube. Then solder them together to get 2 squares
Get four resistors and bend the edges to allow a good surface to solder on then connect for a final cube. Show teacher to get your grade.

Teacher will give explanation on what meets each grade

Achieved (Cube stays together when pulled - not show on picture)
Merit (Left cube)
Excellence (Right Cube)

Task 3: Wire Repair (XLR Cable Example)

This task will help you practice repairing a damaged cable. The example uses an XLR cable, but these steps can apply to any cable.

Find and Prepare the Damage: Locate the damaged area, then strip back the outer insulation and the individual wires.
Tin the Wires and Solder: Apply solder to the wire ends (tinning), then connect and solder the matching wires together.
Insulate the Wires: Cover the soldered connections with electrical tape or heat shrink tubing.
Test the Repair: Plug in the cable to check if it works. Show the teacher to confirm the repair is successful.

Teacher will provide feedback based on your repair and safety practices.

Task 4: Animal Creation (Extension)

Now that you have learned some soldering its time to design your own creation (don't have to be an animal) you can either do the task in groups of 1 or 2.

Sketch a plan of your Animal that you will be designing. Make sure the show how you will actually create this masterpiece.
Create the design, think about what did you have to change and improve to actually build what you had in your head.

Teacher will give explanation on what meets each grade

EoT Soldering Task

Link to product

To assess the ability to correctly solder components onto a pre-designed PCB for an NE555-based multivibrator circuit. The evaluation focuses on soldering skills, component placement accuracy, and circuit functionality.

Achieved
- Components are soldered in the correct positions and the circuit works, with minimal solder joint issues (e.g., cold joints or excess solder).
Merit
- All components are correctly placed, oriented, and the circuit functions reliably without troubleshooting. Solder joints are clean and consistent, with no bridges or defects. The assembly is neat and organized.
Excellence
- Components are precisely positioned and soldered with high-quality joints. The circuit works perfectly on the first try, with smooth, shiny, and well-wetted solder joints. The assembly is meticulous, with trimmed leads and a polished finish.

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