Chuck has sent us some great looking Lifeclocks from his own custom molds.
The mold he uses is made of RTV rubber and the master is actually a decorative mirror mount that he has slightly modified. The plastic is clear casting resin. It cures in about 24 to 36 hours. He has made a few sets so far and make them just like the originals (meaning cast pour dry and back with chrome silver tape).
Katarra Creations also makes a set of Logan's Run Lifeclocks. These are sold in a set of six and includes the rare BLUE lifeclock that was part of the book - not included in the movie.
Katarra's internet store is located at Katarra Creations . She even makes tons of other SciFi collectable props and costumes, including the Sandman outfit and the DS gun!!