Apoptosis does not sound good. When I think about it, I’m predestined for it with my clamping setup. Even when I break the tension, the glans is still clamped off. Even loosening the screw doesn’t do much because the therapeutic band is tight. Or do you mean that clamping off isn’t a problem, just the pull?
I really need to revise my setup.
What should be the maximum pause between phase 1 and phase 2?
I’ve found that the post-BPFSL doesn’t last long and the pre-BPFSL quickly sets in again. What is your experience? How long does "your" post-BPFSL last?
About the silicone materials:
These silicones are 2-component materials. You mix them 1:1 and stir for 3 min. The material is then poured at room temperature and it cures chemically, so without the effect of temperature. Temperatures around 80 °C accelerate the curing, but are not necessary.
We have to evaluate the mechanical properties. There are huge differences in these silicone materials and I think we have to use different materials if we want to build an US phantom or a cock ring.
The viscosity of the material alone determines the manufacturing process. The DragonSkin20 is quite tough and needs to be trowelled in my opinion. I found a video about this (here the DragonSkin10 is processed, which is a bit firmer with 23000 mPas):
From 2:16 comes the part with the processing.
The DragonSkin20 seems to be very well suitable for US phantoms. However, looking at the material properties, I think other materials are better for such parts as a cock ring.
There is still the DragonSkin10 very fast variant, which has to be processed within 4 min and is demoldable after 30 min. Theoretically, you could use the stretched penis as a mold and spread the stuff on the dorsal side while stretching. So you would get a perfect US phantom that fits perfectly at least for a certain time. But I think this is exaggerated.
If you want to make special parts for your torture tool (extender), you should use stronger materials that can be molded (6000 mPas). Spontaneously, I find two products from Wagnersil (28 LE and 35 LE). With 28 and 35 Shore A, respectively, they are significantly harder than the other materials, so I assume it is better for this application. The two materials have an elongation at break of 500% (28 LE) and 450% (35 LE) and can withstand a stress of 5 MPa.
I have tabulated the data to give an overview. Everything I write here is my interpretation from the data sheets and some Youtube videos. I haven’t processed the material myself yet, but find it very interesting. I am still considering whether to cast or trowel my Phantom, then I will decide which material to buy.