hi,
thanks for the info and sites lots of reading for me

Unfortunatly i have not completed a FEM course, i had hoped that i could grasp the basics and do some testing befor passing my stuff onto those in the no, to get them to look it over prior to any prototype production began.
Have you herd anything about solidworks??
My main analysis points is concerned with locking mechanisms on rifles/pistlos. Its hard to explain if you dont know but, a cartrigle is chambered in the barrel then behind it sits the bolt which is held there by locking lugs. I need to find out if my locking lugs are large, thick, enough of them, etc to suport the cartrige when fired. Basicaly i need to know how much rearward force can be applied to the bolt befor the bolt locking lugs (or the receiver cam which holds the lugs) hits a unsafe level, i was hoping it was i could grasps the basics of it enough to make a few tests.
A silly question im sure espaily because ive used CAD, but what is the differance between CAD, CAM and so foth??
Anyone else got thoughts on best CAD??
thanks
jonesy