ok, starting out on the coilgun, found some 1\2ID tubing from the junkpile motorhome in my yard, it gona be scraped anyway so i took the liberty of leberating the cold water pipe, lol.
this is what i got so far and is about all ya need to do a coilgun, tubing and wire some cloth tape, has to be cloth for the coil will get warm and melt electrical tape,this is the starting of what they call a single stage coil gun, single stage because it uses only one coil for the accelerator.
the recess in the tube is not required but it makes the winding of the coil go smother and prevents the coil from jumping off the tube when firing, just make shure not to cut to deep or the tube will snap off most likely during the last turn of the windings making ya wana get the hammer out, lol.
the wire is a inductive filter out of a treadmill that is #18 AWG copper magnet wire, good size being it is easy to work with and doesnt blow apart with 350Vdc, still gets warm thoe.
now to wind the thing.