All this talk of mitre boxes has me thinking. oops. I do sound, and for a project, a current customer has purchased matching rug, and 1x3 for some corner traps in a sound room. I think he was intending to put foam behind it. Regardless, he was going to do it until his lack of hand" stopped him. I want to do this cheap, as it was an add-on to the job. It isn't more than described: 1x3 frame, where picture frame is necessary. Wrap in carpet, place rubber strips where frame meets wall and hang it. But I know I've seen "picture frame mitres" where it cutstow pieces of woodvia the same mitre slot so they both have the same exact angle. It holds them in place as if they were in use, and you mitre them one at a time from different sides of this 90dg mitre clamp.
Secondly, Are there clamps that would allow the gluing of "picture frame" material, so that some good Gorrilla glue and maybe a few large staples could do this job? There will be no measurable orintended tension beyond weight of carpet on this frame. That is necessary so material can move and resist standing wave. Thanks
