Build Nipkow Lens disk

[rld-tv01]

I was thinking about building a lens disk mechanical camera and monitor. I have an old mechanical TV camera/monitor kit from Peter Yanczer which I would use for the mechanical drive mechanisms. I've been perusing the internet for ideas on building the lens disk. I found the following on the NBTV site.
http://www.taswegian.com/NBTV/forum/...it=+lens+disk+

I then found the following on eBay
http://www.ebay.com/itm/321551480274...%3AMEBIDX%3AIT

I like the idea of sandwitching two disks with the optical beads between the layers to keep the beads from flying off and killing someone. Would the eBay lens above work? Anyone know where to buy inexpensive optical beads suitabile for nipkow disk. What size holes and lens would be best for the disk?