SUPPORT FOR FLEXIBLE DENTAL FLOSS

This is a project I had developed some time ago. I wanted a stand to floss make it as simple as possible, easy to wash s why no parts or devices. But how to develop this support, and would have to hold the floss tightly on the ends of it, so it could be used?
The solution was to take advantage of the flexibility of plastic. Thus, the two ends of the floss can be attached by the cord holder, ie, puts up the two ends of the wire in the middle of the cable, which is broken into two equal parts. When the person holding the bracket cable to use it at the same time is holding the two ends of the floss, simply squeeze it a little more.
Thus unable to develop supported in a single piece, and yet functional, taking advantage of the flexibility of the plastic which is the material has to be used.
Despite having developed the computer, I had to manually shaping the piece by hand in epoxy putty. After the copied part in resin using silicone molds. It happens that the resin loses its flexibil