DM2 feedscrews for injection molding, extrusion, and blowmolding reportedly produce 15 to 20 percent more output than a typical barrier screw with 25 percent less shear. The DM2 name refers to the ...

Q:I'm an architect who has also done my fair share of swinging a hammer. I enjoy your column, but once in a while you miss on some details. In this instance, you recommended fastening shear ply with ...