Considering the glue is there to hold the chip in place (against gravity) while it's flow soldered, it can't be too heat sensitive? - and trying to melt the glue through the chip can't be good?. The main thing is to keep the PCB in good condition, the chip is faulty anyway, cutting the pins off keeps the board safe.

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wouwww dear my forum friends. I am so happy with your sooo much useful help answers. So Than i want to buy nederlands one. So far that is the best. I have already SMD hot air gun(Aoye mark) i dont have problem desoldering of the smd ics,tr and resistors. Only i had this vacum pomp desoldering. So Thank you so much for your answers. Have a nice days.

 

Pump.

PCBs.

There's a desoldering vacuum pump where I work, all it is, is a soldering iron connected to a vacuum pump with a tubular bit but it looks quite expensive.

I suppose you could even make your own using a piece of thin aluminium tube, a vacuum cleaner and some steel wool (as a solder filter) but it won't be as good as a real desoldering machine.

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