DIY Optical Printer

[BigBeaner]

http://www.city-net.com/~fodder/s8mm/optprint.html

I did a search and couldn't find too much but who has made this? I just want an opinion as I think I'm going to make one I'm in the mood to experiment possibly also using 8mm/16 for backwinding effects (I haven't bought a cart rewind yet, my test with the old tape method has not come back).