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Today I will introduce a consumable used in the repair of an electronic product

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Desoldering wick

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Just like the name

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It is a kind of wire that can absorb solder

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There are many kinds of specifications of different widths in the market

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The width of the copper sheet has different specifications

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There are two specifications of the desoldering wick we commonly use

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The left one is 3.5 mm

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The right one is 2.0 mm

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3.5 mm is mainly used to repair large size circuits such as notebooks

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2 mm is mainly used for repairing small size circuits such as mobile phones

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Let's learn about the use of desoldering wick

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Here is a motherboard with the chip removed

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The chip is relatively large

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Now,you can use the wide desoldering wick for repairing the notebook

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Put the desoldering wick on top of the motherboard solder joints where the chip was removed

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Heat the desoldering wick with a soldering iron

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Let the solder on the motherboard melt

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The copper wire absorbs the solder remaining on the motherboard

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Keep the solder joint in a flat state

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If the chip size is relatively small

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like this

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This chip is already smaller than the width of the desoldering wick

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You won't be able to put it on the motherboard

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We can use narrow desoldeirng wick

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It's easy to operate

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Even smaller size

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We can use narrower desoldering wick

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The 2.0mm specification is basically universal when repairing mobile phones

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If the chip size is smaller

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We can cut the desoldering wick narrow

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Make it fit into a smaller operating space

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This is how to use desoldering wick

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Let's talk about some precautions when buying desoldering wick

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When shopping for desoldering wick

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First we gotta check whether the copper wire of the desoldering wick is bright

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Whether there are signs of oxidation and blackening

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Like this

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Obviously the top one is darker than the bottom one

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First, observe the copper wire finish

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Second, observe the density of copper wire weaving

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Are there any gaps

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Or there is a little mess when weaving

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The last one is to see if there will be some flux material in this desoldering wick

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It's narrow, it may not be clear without a microscope

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Let's take a look at this wide one

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Pull back and forth a few times

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Eventually you will find

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There are some white powder in the copper wire

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This one is soaked in rosin after weaving desoldering wick

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In this way, the surface of each copper wire will be covered with a layer of rosin

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In this way,the desoldering wick is not easy to oxidize

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When desoldering

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Because it has rosin, it will be smoother when desoldering

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These are the a few things to keep in mind when buying desoldering wick

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So much for desoldering wick today.Thank you for watching