50 degrees with a tin lead to lead-free flux will be much artificial dip temperature effect, tin and not waste materials
255-275 tin better - strong solder free of charge for technical questions you answer more
Flux is lead-free, and there is no need to use a good flux bar, the temperature depends on the actual situation, try a few times on the line
The temperature is controlled at about 280 degrees. Help, choose good activity will not waste materials.
