|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
|
|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: Is MDF airtight? (Long-ish) posted by Dyak on June 25, 2007 at 10:05:39:
"Most people choose MDF for their enclosures. Believe it or not, MDF is not airtight. All the hours you have spent sealing your seams with Silicone, Latex Caulking, and the like, while important, are only half the problem. During a recent visit by Dave Gumienny of Kicker Car Audio, he reminded me about the breathability of MDF. He told a story of one of the training courses they did years ago when he worked for PPI, where 5 small pieces of MDF, 3/8 thick, were stacked, and all where lifted by a vacuum into the air."
I gonna have to call "bullshit" on this. It is the vacuum that is created by the lack of air molecules between the layers, or sheets of MDF, that is causing the pieces of MDF to stick together when lifted.
This same "experiment" can be demonstrated with plates of glass. It is the smooth surface of the pieces that allow the air to be displaced when the two pieces are placed on top of, or in very close proximity to each other, and most of the air molecules will be displaced from between the planes of glass/MDF, thus a vacuum is formed which will adhere the pieces together when lifted.
The term "Vacuum" merely means the absence of positive pressure and can be confused with the "sucking" that is normally assigned to a vacuum cleaner so to speak. In other words, what U witnessed was a nice, but yet effective, parlor trick :-)
Cheers
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Is MDF airtight? (Long-ish) - kenster 20:18:12 06/30/07 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
