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Sometimes, the tin planting may not be full at the first time,

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we can add another layer

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Some places where the tin was not painted very well just now,

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in this case, we can replant it

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If it is planted twice, the solder points will be more uniform and fuller

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Then check to see if there is any blockage in the hole.

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If there is a blockage, it means that the tin has not fallen

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Blow it

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You can also put the mainboard directly on the layered heating table to heat it,

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and the tin will be easier to melt

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Sometimes the temperature is not well controlled,

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and some parts of the bottom may be blown out of the tin

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After planting tin twice, it can ensure that each solder point is 100% planted

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Moreover, this way the solder points will be fuller

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Tin planting is now complete