Laser cutting those parts cost me £120 including Vat, screen and controller was $159.00 and LED strip with its driver $18.00. I can also add about £100-150 for couriers, screws, 12V power supply and other bits like sandpaper and glue. So in total a bit more than £320.00.
The first slice of my assembly is a 2mm thick clear acrylic. This is moulded acrylic which is more rigid than the cheaper extruded sheet. All flat screens when pressed create distortion marks around the pressure point, but the one I am using seems to be too sensitive so I wanted to protect it. The other layers are black 3mm acrylic sheets.
If any one is interested the files are at:
Note though that this design uses 4mm sheets for the base (which my local laser shop didn't have) and it was designed for the hardware I intended to use. So please use it as reference only
During the process I changed the inverter so I had to dremmel the plastic and the lesson here is to gather all the components first and make sure they work before design the housing.
Wacom Intuos PCB has a white outline around the active area so I removed any metallic parts from the back of my screen directly above it. However the electromagnetic field detecting the pen is also generated a few mm outside of this marked area and the CCFL was siting over it. So the first time I tested all the parts together I couldn't use the bottom half of my screen. I then masked the surrounding of the active area with aluminium tape but the pen would no longer work in the bottom 10mm of the screen.
The problem was simply eradicated by using a 12V LED strip so there is also no need to shield its inverter. The best tip I have to offer is go for an LED screen.
I am happy with build and it works perfectly with virtually no jitter. On the other hand if you add the cost of the Intuos4, which I bough when it first came out in the market, my materials and a failed attempt to mill the enclosure from a big block of plastic I spend £900. You can get a Cintiq 13HD with that amount, so........ the build make no sense unless you are a DIY addict like me