]> bolt Generic bolt cost model Christophe Bru Jo.Blogs@www.ac.uk bolt.jpg This is a bolt 24/01/2005 (1.3+2.1*param1)*(param2/15.9+param3/13.4) This parametric equation returns the cost of the bolt based on its length and diameter. It is suitable to both aerospace and standard quality bolts. Aerospace quality 1 0 1 Y/N Enter 0 if aerospace quality is not required, 1 if it is 40 Length 1 25 100 mm Enter the length of the bolt 30 Diameter 1 6 20 mm Enter the diameter of the bolt 30