Recommendations for custom amp stands?

I second the proposal to consider the Brand Delignit and Panzerholz or any other Brand offering a Resin Impregnated Densified Wood Board. 

The Sand Box is a very good start at a low cost, well worthwhile experiencing as a design. Free Particle Sand can also be used as a Oil Damped Sand used the amplitude control in certain industries. 

Maybe a Pandora Box design, a Box within a Box of which Free Sand Particles and Oil Damped Sand Particles are used in either of the Boxes. This is still a cheap to produce option. 

Corian Off Cuts can also be sourced to produce a Box Wall that is most visualised and a certain type of aesthetic is desired. 

Corian will also be a better Sub Plate material than a Typical wood/wood derivative material to sit the Amp on. P'holz or another is the ultimate Sub Plate. 

Nice work bigtwin!

I'm lost as to why some of you think the material the box is constructed of will make any difference at all? It strictly contains the sand! Perhaps the material the top plate (sub plate) the amp sits on is made from will have some unique tonal qualities but  I think the sand will diminish any tonal differences beyond recognition. 

There are materials for the casing to contain the sand that can offer a very attractive effect on how local kinetic energy is dissopated / sampled. 

Using such a material in conjuntion with multiple grains as a filler, will be an upgrade to a more common design.

Successfully tidying up an End Sound will create a condition where Tonal differences are much easier to discern.

This is different to using a material to influence a particular tonality. 

+1 on Timbernation.  Beautiful woodwork, gets them off of the floor, solid wood.

So where can i get some of that Panzerholz, Delignit or similar in the USA (ideally in Florida).  I dont need a whole 4x8 board.