In search of DIY Audio Equipment Rack Materials

I'm looking for audio rack hardware/materials which I cannot locate even after exhausting every resource available to me.  Perhaps someone is able to help out here.

I've designed an audio equipment rack similar to the product made and sold by Mapleshade.  I liked the looks and the materials.  I didn't like the cost - at $4,600.00.  Whether it is worth it, or not (some love them, others don't), it's not for me.  Nonetheless, it is a design the average guy can imitate at home for an affordable cost, and it would not cost too much for the materials.  Plus, the aesthetics, while subjective, appear to be generally pleasing.

I'm not duplicating the 2" (or 4") joined, specially cured Maple shelves (I have found what I believe is a superior wood  product that looks great, maybe even better looking!), but I do want to use the all-thread supports if I can locate brass hardware similar to that of the Mapleshade product (see link below).  Perhaps the company has the brass hardware specially made?  Thanks for any help with this.  

I have read of some of the drawbacks to this type of design in terms of stability and resonance characteristics. I believe some of these problems can be mitigated by modifying the materials (better shelf material, much better, sophisticated coupling materials [or more properly de-coupling, as the case may be], and so on).  And, with these modifications employed, the finished product could be very, very nice and suitable for somewhat "high-end" audio equipment for under $1,000.00.

Here is a link to the site with photos as you scroll down.  Thanks again.

https://www.audioaficionado.org/showthread.php?s=b6bb40c42902d38e082ea5a607424f16&t=35351&pa...