Homemade Iso Box, anybody make their own studio furniture? Options

[triple_o_six]

I'm new to the forums. I was wondering if anybody makes their own studio furniture and racks.

Specifically, has anyone succeeded in building their own computer isolation box. I'm thinking along the lines of Sound Construction & Design's ISO BOX or ISO MAC.

I'm thinking of building my own. It sure beats forking over the dough for the Sound Constuction box.