Hi, All,
If you're building a bomb clip (or just the bombs themselves), you will probably want to paint the yellow stripe on the noses. For the 500 lb bombs, the end of the nose is yellow; for a 750 lb bomb, a yellow stripe is painted around the nose. I discovered a relatively easy way to mark the ends of the bombs for painting:
NOTE: This procedure assumes you have already painted the body of the bomb.
500 lb Bomb:
1. Place the bomb on a flat surface so you can rotate it freely. If you've already attached the tail fins, place the bomb at the end of a raised flat surface.
2. Place a heavy object with a vertical face in front of the bomb so the nose contacts it, or you can glue/clamp a wood or plastic block in front of it.
3. Make a mark about 2 mm from the end of the nose on each bomb.
4. Place a sharpened standard pencil perpendicular to the bomb with the sharpened end contacting the nose of the bomb at the mark.
5. Rotate the bomb against the block to create a circular line.
6. Paint the entire marked area yellow.
750 lb Bomb:
1. A 750 lb bomb is a bit trickier because you need to create a stripe. On each bomb, make a mark about 4 mm from the nose end of the bomb.
2. Decide on how wide you want the stripe (I made mine about 1.5 mm) and make a second mark toward the nose of the bomb.
3. Place the bomb with its nose against the block.
4. Lay the pencil perpendicular to the end of the bomb at each mark and rotate the bomb to create the outline of the stripe.
5. Paint the stripe yellow.
Hope this works for you 
,
Russ