I'd be interested in finding out something about this too as none of the cabinets I've seen thus far from the likes of Ikea, etc., seem to meet my needs, i.e. a unit around 6-7ft tall capable of housing 10-12 items with adjustable/sliding shelves, solid or glass doors, plus storage units either side for DVD's and CD's.
Got a basic idea of the design, but would appreciate advice on materials, e.g. MDF or plywood for the carcass with a better quality wood for surrounds, door frames, outer panelling, etc.
I designed one myself and asked the joiners at my work if they could knock it up.
My design was solely made from 18mm MDF
1500mm wide x 750mm high x 550mm Deep with Glass set into the two doors at the front and the rear left open.
The Joiners, however, have made some alterations to my design.
They made a frame from 3"x3" timber with 2 sheets of MDF to make the top surface, and they added 100mm to all the external dimensions, making this thing MASSIVE!!
Instead of glass for the doors, I found some copper Woven mesh (Used for radiator covers) which looks great and works very well (IR gets through fine)
I gave the whole thing two coats of wood primer then used some ronseal "Paint and Grain" which actually works!! Then a coat of Clear Gloss Varnish.
The whole thing looks like its made from Pine
There's one shelf inside the cabinet but the width allows my VCR, Digibox and Pioneer reciever to sit adjacent to each other (with a 100mm space between each!!)
It cost about £60 for all the timber and paint etc. but i got it built for free
If you need any tips, maybe I can help