Quoted from Freeplay40:I've been contemplating the left ramp for well over a year now. I actually have a couple samples of this ramp from a local enthusiast. Very difficult ramp to make a mold for. The material I presently use for molds simply would not withstand the forming process. I have not totally given up on it and at some point there is another material that I want to try which this ramp would be a good test for.
If you ever work this out I am in!