Originally Posted by TBSpyder
Those concrete forms are thick cardboard if I'm not mistaken. Probably wouldn't be too heavy, never tried it though.
They are called Sonotubes, and they work great as enclsures. They are cardboard, but like 3/4 inch wall thickness.
Grade A...have you bought these at HD? I've been looking for a local source. I found a couple online places, but shipping was big.
Toby