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next we will deal with the residual cutter

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on the surface of the chip

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we use the card slot of the professional chip

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clip on the edge of the fixture

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put the chip on this cart slot

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then push the slider to clamp the chip

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after clamping

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add some suttery paste to the surface of the chip

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the suttering iron quickly flatten on it

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pick it up when you're done

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don't let the suttering iron stay on the surface

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of the chip all the time

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it's the suttering iron touches the chip for more than

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2 or 3 seconds

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the chip may be damaged by high temperature

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therefore when we flatten the sutter

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the sutter iron must be flattened on it quickly

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and not stop on it

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this is one of the flattening methods

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let's learn another one

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the other is to directly use a strange to add flux

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and use the needle to press the chip

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and flatten it quickly

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adjust the direction

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done

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the surface of the chip does not need to be flattened

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with the disardering wig

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like the motherboard

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because we still need to rebult later

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there is no need to flatten the sutter joint

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to make it particularly flat

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as long as the sutter joint is not larger

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than the opening of the stencil

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just to flatten it little

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then we use a dusty free cloth dipped in PCB cleaner

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to clean the chip

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pretty much like this

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then write it in this dusty free cloth

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continue to wash with it

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change to a clean dusty free cloth

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chips must be cleaned

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otherwise any dirt on the solder

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joints will cause the reballing to fail

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dip the brush with PCB cleaner

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and clean it with dust free cloth

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well the chip has been washed the clean