A compact, rolling color changer.
Forty years ago, there were no Scrolling Color Changers until we invented the category. After we built the machine we then had to build the first gelstring. We went to the Norcostco store in Dallas and bought several sheets of gel. We brought 'em home, cut some rectangles and taped them together. Easy, no? For making the first one that's the way to do it. Half a million gelstrings later we have learned a few tricks.
Scrollers are now available in lots of sizes from many different manufacturers. They vary in approach but all use the original idea of 2 rollers and a motor to drive them. The gelstring runs between the rollers and can be positioned to give you the choice of colors. The gelstrings can have a variable number of frames. The typical number is between 12-32, and attaching them to the rollers can be simple like tape or complex mechanical gizmos. Each size of scroller has a different height and width for the gel frames.
We make Gelstrings for every Scroller.
Just like the machines look simple, the gelstring is also deceptively simple. In real life many challenges enter into building the string. Below is a quick look at a couple of them.