Good Vs. Bad Soldering
Good Soldering Should...

- Be shiny thus making it less sponge like and more conductive.
- Be underneath the component and not all over it, ensuring it is connected to the copper and not just sitting in a glob.
- Not be a giant glob on the top of the component, not connected to the copper.
- Be very thin so that when heated it will not melt and spread.
Smooth and thin layer soldered perfectly onto the copper. - Be small enough so that the clamp is able to clamp directly onto the legs of the component with no troubles from the solder.
The clamp shaped to fit perfectly onto the teeth of the component not covered in solder.
Good Soldering Should Not...
- Be a dull color making it more sponge like and full of holes and harder for electricity to pass through.
A dull, not shiny blob sitting on top of the component. - Be soldered onto the top of the component, stopping it from connecting to the copper.
- Be very thick, making it more likely to melt and spread wherever it pleases when heated.
- Run over the edges of the copper connecting two parts of copper and shorting out the circuit board.
- Form a bridge between copper pieces, shorting out the board.
- Leave bits of solder lying in random places all over the board.
Bad soldering with burnt, and raised components and solder strewn across in all sorts of unnecessary places. - Burn the components you are trying to solder on.
- Be so underneath as to cause the component to raise up high off of the circuit board.