Like WCF mine is the right index finger tip too, Atwood engine on a FireBaby, 8 or 9 years old. Maybe 1956 or 57?? Several weeks ago the same finger but right on the side of the knuckle. This time a G-62 with a spring starter. The engine would have started instead of just going pop but my hand was in the way. Icould have used stitches but it was too nice of a day so I figure I did the same thing as I did as a kid, a couple of band aids with some tape, it healed up clean.
That leather glove I kept in my flight box now is on the hand at all times when starting that one.