kabibili ko lang kanina nito. price 1500php where quiapo ung malapit sa may simbahan na building ***tanong ko lang kung anong diameter ng nose trill ung kailangan gamitin ung 1cm or ung .5cm na butas ng nose trill and anong tamang setting ng heat and air dun kasi ung gamit ko 4 na air 3 na heat 3mins na di pa din tunaw ung lead ehso i make it 4.5-5 air and 4 heat mga 10-20sec bago matunaw answer by sir primus always remember when using hot-air high heat, low air pressure = good for very small smd, it avoids blasting the components from the board. low heat, high air pressure = good for bigger smd. high heat, high air pressure = good for bigger smd with thick solder lead low heat, low air pressure = good for a very very small smd. - it prevents from blowing the components and damaging it due to over temp ***another question bat pala tumatalsik ung soldering paste and may parang cracking ung hinahot air ko ung pinagprapractisan kong VC pero ung ibang VC walang ganung tunog nag preheat naman ako tapos ung isa parang may ball of lead na nagform and mahihiwalay sa joint tuwing hinahot air ko sya nilagyan ko ng soldering paste kasi madumi ung mga joints answer by sir primus depende sa dami ng soldering flux/paste, if the board has a lot of it, it tends to be blown away by the air, the crackling sound you are hearing is the sound of the component being disconnected from the pad. usually you will hear it if the heat is not enough to melt the leads and the pressure of the component pin from disengaging from the pads. a ball of lead is a sign that the pads are dirty and the lead won't stick to the pads. before you use the hot-air to solder or de-solder component, ALWAYS clean the board with alcohol to remove all dust and oil, you must also make sure that your hands/finger are oil free if you were to touch the board or the components. - that is to prevent the "ball"