DIY diffusor questions... | John Sayers’ Recording Studio Design Forum archive

Hi. I'm a regular lurker, but not much of a poster. There's a lot of incredible stuff here. Thanks folks. I'm wanting to build some diffusors for my room, and haven't found much info on anyone making them themselves. Has anyone here attemped making skyline or well diffusors? If so, Did they help your room? What materials did you use? Is there a neccesary density for the material? Are there certain dimensions that need to be adhered too for them to work? Any other info to be shared? I'm sure I'm not thinking of several important factors. Any help would be awesome. Thanks!! Stephen