Perfect video for educational purposes! no doubts on why this design needs to be considered.

Hi. The most beautiful expression I have ever seen. Thank you.

You should have put in a few horizontal layers of colored material between the ordinary sand when filling the hopper. That would have shown mass and pipe flow even better.

Gorgeous ! thank you for this this is life saver.

it seems that screw shaft dia. and pitch is varying from start to end , shaft is larger to small and pitch is lower to higher, is there any fundamental equation or note to this ratio related to discharge, please share in comment or in my mail.

Does it will give constant quantity dispense every time if we maintain constant revolution of shaft

Well explained

What material are you using?

very good...

Hi, it looks like a render, am I right?