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1. YEOT Spring 2015
Lab 3

2. Solder
● Two Wires X
● Two Wires Parallel
● Paperclip Man
● PCB Resistor Practice
● Desolder
● Weevil Project
Agenda

3. ★ Always wear safety glasses when soldering.
★ Never solder a live circuit (one that is energized).
★ Soldering irons come in models that use different wattages. Use the right size
soldering iron for your projects; too much heat can ruin your board or
components.
★ Never place a hot soldering iron on your work surface: You could start a fire.
★ Never, ever try to catch a hot soldering iron if you drop it. Let it fall, buy a
new one if you have to — just don’t grab it!
★ Give any soldered surface a minute or two to cool down before you touch it.
★ Never leave flammable items (such as paper) near your soldering iron.
★ Be sure to unplug your soldering iron when you’re not using it.
Solder Safety

4. 1. Not Enough Heat
2. Too Much Heat
3. Not enough solder
4. Moving joint before solder solidifies
5. Dirt or grease
6. Carbon on tip of solder iron
7. Wrong materials
8. Failure to test the joint
8 Most Common Errors

5. Solder Tip: Clean the Tip

8. ❏ Two Wires X
❏ Two Wires Parallel
❏ Paperclip Man
❏ PCB Resistor Practice
❏ Weevil Project
❏ Desolder
Practice

9. Paper Clip Man
Practice soldering using paper
clips. Start by soldering 2 paper
clips together. Heat the
paperclips up with the soldering
iron first then add a small amount
of solder. Then try to make a
“Man” like the one shown below.