Recent content by rctong

I've read in literature that immediately after quenching 6061 aluminum (when solution heat treating but before aging) the workpiece is soft and ductile. Is this true? Does that mean you can form it without concern of fracture? Thanks R

What happens when you try to deform aluminum while its at its annealing temperature? Are you able to form it without concern to fracture since the grains are recrystallizing? Thanks R

How much gap is typical for plastic designs (caps) versus metal designs (nuts & bolts)? Can you recommend any websites or literature showing mating thread profiles? Thanks Ryan

When designing threaded parts that mate together, (for example a threaded bottle neck and a cap), are there generally gaps or spacing anywhere designed in to for tolerances? Or are the mating threads line to line? It seems like there should be some sort of gap but im not sure. Thanks!

When designing threads for a plastic injection molded part, say a jar with threads at the top and its corresponding mating lid, is the threaded portion of either piece on a drafted surface? I know that you are supposed to add 1-2deg of draft to aid ejection from the mold in general but are the...

Whats your opinion on the pros and cons of each. Hydro printing is new and cool but it is very labor intensive and seems expensive? Thoughts?

Thanks everyone.. but even with blow molding, how do you form the handle? How do you form the handle at an angle, hollow and connecting to the main body of the bottle all at the same time? Do you think this is this an extruded blow molding process or does it use a preform? Blow molding without...

Does anyone know the manufacturing process of this bottle? I had thought it was just blow molded but then someone asked "how do they make the handle"? and suddenly i was stumped? How would you make the hollow handle in a mold type process? Cant think of how to do it with either blow molding or...