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Thanx, I'm trying to draw a compound spring for a shock absorber. I'm much obliged. I did experiment with rotating sections of a torus to obtain a smoother 3d spring section, it wasn't completely successful but it's an approach that other people may find useful for other applications. I'm glad...

Several Motorcycle manufacturers are using composites on prototype one of a kind machines. Composites are being used for chassis, tanks, ergonomic plastic components and just about anythings the factory engineers can think of. The aftermarket parts suppliers in the dirt bike community are also...

I worked for a company that used a rust inhibitor called galvafroid on any of it's steel parts because those parts were then going to be bolted to aluminum skylight frames. I know exactly what you mean, because when the galvafroid coating was a little thin, iron oxide would peek through the...

I am developing a new composite that will use a naturally occuring polymer as the reinforcing component and a synthetic thermoset plastic as the stabilizing component. In trying to accomplish a covalent bond between the two, on the outer layers of molecules of the naturally occuring polymer, I...

I am away from my house for another month but for the sake of asking, can a 3d polyline be incorporated into a solid and then modified using the various solid modelling commands?

Using ACAD14 I am unsuccessful at drawing a 3-point arc in three dimensions. I've since found another procedure to get the arc almost the way that I want it but if I could specify 3 points in 3-space and have the program generate the required arc then it would be more accurate and a lot less...

I am developing a composite that will utilize silk as the reinforcing component within a thermoset plastic and am trying to find information that will help me decide whether or not degradation of the protein strand is going to be a long term factor in the finished product. Chemistry is not my...