This is an inductor core that should have a value of approximately 559 microhenries when wound with 100 windings of 32 AWG wire. On the top of the core the decross symbol I created can be seen if you choose coil.stl. If you do not want a giant D and an x on the top of your coil, choose coilwithoutdecross.stlTake the inductor core and begin by sanding the last inch or so of wire. Loop that inch of wire once around the hole in the bottom.Turn on some music and start winding the coil as neatly as possible around the core 100 times.4.Do the same thing as you did for step 1, but around the top hole instead.