Paul makes a good point...same has happened to me watching solder disappear some were...ohhh duh.Cables still worked and seemed fine but haunted by my lousy soldering i ended up at harbour freight and bought the portable anvil.It is just more stable for my use and as adjustable.Also something to plug connector in to cushion heat is good.I use double female connector.
A friend asked me doing this diy is there a point were your going to be fine even if your not the best solder pro...im still not great but have learned a little more on tips,y tube...all my interconnects test out and sound great...i do wish i had a place instead of my computer desk though to do this.