Hi, I have a device part which you can see it in the attached picture and I need to make some powder fall down through those holes. Simplified, it looks like a funnel that must pass some powder. Do you have any idea how to make this process automatic? Some of the solutions I tried (A and B) but don't work properly: A) use of vibrating motors on the exterior walls B) increase the holes number and diameter Let me know if you have any idea how to do it. I might be able to make some holes only on the cylindrical exterior wall, but nowhere else. Thank you. ------------------------------------------ Added 15 JUL 2012, 15:53 PM EDT Also, I have in mind installing some propellers inside and /or a vibrating ring inside the funnel. Let me know your ideas. ------------------------------------------ Added 16 JUL 2012, 19:26 PM EDT Other info based on posts received. There is no gas used in this device. I don't need the drawings, neither prototyping at this time. I intend to build the part myself and I need to have a simple idea since I build the piece with limited tooling. Thank you! ------------------------------------------ Added 16 JUL 2012, 19:26 PM EDT Other info based on posts received. There is no gas used in this device. I don't need the drawings, neither prototyping at this time. I intend to build the part myself and I need to have a simple idea since I build the piece with limited tooling. Thank you! ------------------------------------------ Added 19 JUL 2012, 2:31 AM EDT The funnel is made of plastic and the powder content I am not able to share. Powder has 5 microns median particle size and is highly higroscopic. Vibrating motors used: /make-a-store/item/DCM-373/Mini-Vibrating-Motor-Pancake-Style/1.html ------------------------------------------ Added 19 JUL 2012, 3:08 AM EDT The "funnel" has this approximative shape: Angles: 90 / 65 / 25 Sides: 76 / 64 / 32 ------------------------------------------ Added 19 JUL 2012, 3:09 AM EDT The sizes, number, and shapes' holes can be adjusted. Desired Skills: Industrial Design Industrial Engineering Manufacturing Design Materials Engineering Mechanical Engineering Keywords: Product Design