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If the question is how to solder a part that moves around, like an 805 resistor, on a homemade board with no solder mask, I use a couple of aids.
1) A small dot of paste flux helps.
2) After flux, a small dot of solder on one pad. Place component and then heat that pad. The component will float into position.
3) A small dot of cyanoacrylic adhesive (super glue) between the pads. Use a tapered wire (about 0.032) diameter to add the small spot of glue. The heat of soldering will get rid of most of the CA; if a little is left, it won't matter in most cases.
Also, a little beer helps steady the hands. A magnifying visor is essential at my age too.