Originally posted by KermieD
That's what I did, yes. No nichrome bridge wire (I have a really serious case of "dumb thumbs" and soldering nichrome to make ignitors would take me days). Just set the 2 wires (I used 2 strands from Cat5 cable) with a *very* small gap. Melt a package of 6 ping pong balls into 8 oz of acetone. Pour out a small part of that and mix graphite with it till it's sort of a thick syrup consistency. Once done, use an ohmmeter to measure the resistance. It wasn't tough to get a fairly consistent. 1.5 reading. If you're just lighting BP motors, you're done. If you're lighting AP, you'll need to take the 2nd step and dip the motors into a pyrogen once the conductive primer has dried. I honestly don't believe adding Mg to the conductive primer will allow you to bypass the pyrogen for lighting AP motors.