If you are making darts for someone who competes, they are a pain. Generally, that person will have his/her personal preference regarding the weight and shape & they have to be exact. Steel tip darts are weighed without the rear shaft or flights. For someone who is used to tungsten darts at 24g, it's hard to get wood darts that heavy (even filled with lead). As for electronic darts, they are much lighter, but the entire dart is weighed.
Shape and weight distribution come into play, too. Does he like a front loaded dart or is the weight balanced through the length of the body?
Plus, the body has to be dead perfect square to the tubes. If not, the hardware won't fit square and the dart won't fly straight. This is not a good thing. BTDT
Maybe it's just me, but I'm going to finish up my one order and let that be it.