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Today, I'll introduce a maintenance tool commonly used in electronic product maintenance.Tweezers
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The tweezers we use for repairs are relatively sharp
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There are straight-tipped tweezers
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and curved-tipped tweezers
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I got two kinds for each tweezers today
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One of the straights is longer and wider
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The other of the straights is shorter and narrower
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The curved-tippeds are the same
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One is wider and longer
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This one is shorter
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Different tweezers for different operations
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For beginners, it is recommended to use this kind of relatively wider and longer one
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It has a large area of contact with the hands
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It's easy to control
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When using the narrower tweezers, the area of hand contact is small
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Some novices hands may shake when holding it
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What are the functions of curved tweezers and pointed tweezers?
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Sharp tweezers are mainly used to remove some chips or components on the circuit board
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It's easy to operate
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If you use a pair of curved tweezers
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like this
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It's not easy to control the direction
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What are the curved tweezers mainly used for?
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When repairing a mobile phone, we need to do the reballing after the chip is removed
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Put the chip under the BGA(ball grid array) stencil
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After the BGA stencil is placed, apply solder paste
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There must be a tool to press when heating with a hot air gun
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If you use your fingers to press
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and the air gun is heated to more than 200 degrees
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your fingers will definitely get burnt
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So we can use tweezers instead of fingers
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A single tip of the pointed tweezers has a very small area in contact with the stencil
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When pressing, the sides may curl during the heating process
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The contact area on this side of the curved tweezers is relatively larger
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It will be more stable
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Lay it down, not upright like this
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There's no need to press upright
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After we bought the tweezers
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Mainly Check the tip
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Will there be gaps in the middle when they come together?
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Or look sideways
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Will the two tips appear one long and one short?
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Basically if they're sharp and symmetrical
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Then there's nothing wrong with these tweezers
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Expensive tweezers may use this steel
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The quality is better
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Hardnessis higher
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If the tweezers are warped, the buckles such as cables are not easy to bend
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The steel used in ordinary tweezers may be slightly worse
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Hardness will be slightly lower
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Basically no big difference
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When used properly, each tweezers will last a long time
