Shank and Holder Advanced Step 7

1. Set the Additional Radial Safety of Extension to 0.5. The Total Radial Safety is 1.5 = (Grid Safety) 1 + Additional Radial Safety 0.5.

2. Set the Z Safety of Extension to 1.3.
   
   All elements that are checked against grid representation of stock and part (in this case, Extensions and Holders) get a basic Radial Safety of 1.
   The basic Radial Safety of the Extension in this case is 1 (Grid Safety). Therefore:
   Total Holders Safety = 1 (Additional) +1(Basic) = 2, Z Safety = 1
   Total Extensions Safety = 0.5 (Additional) +1(Basic) = 1.5, Z Safety = 1.3