Interesting, 0.018" used to be a pretty common measurement to use in gapping ignition points (if you didn't have a dwell meter). My point is, 0.018" is only a number, take a look at a 0.018" feeler guage and compare it to a 0.040" feeler gauge so that you can get a good visual impression of just how thin 0.018" really is.
I think you lucked out Joey, be thankful you still have all your fingers.
Steve

Approach life like you do a yellow light - RUN IT! (Gail T.)