About this 3D model
With this design it was able to be designed with a thin light mold Insert-able length is 133 mm (5.25"), Average Shaft Diameter at its largest is 45 mm (1.77"), ball width 67 mm (2.64"), it also has a suction cup option mold volume 290 mL ( 8.9 fluid oz) Each has a mold and the actual pecker itself depending on how you are going to mold them. mold has location for locating bolts 10mm, 5mm and 3mm can be scaled, cut and glued together to any size you want Use Platinum Cure Silicone, Shore Hardness 10 = firm, 5 = Medium (ish), 3 = soft. Smooth-On is a good source: "Dragon Skin 10" for firm, "Ecoflex-00-50" for medium and "Ecoflex 00-30" for soft for a quick and dirty toy (will have flashing that needs to be cleaned up) you can use the 3d printed molds You could also sand and clear coat the mold halves, using Vaseline to seal the halves (note: silicone touching Vaseline will not set so make sure it doesn't squeeze into the mold cavity during assembly. So don't use too much in other words) Print with thick walls ex: 4 layers or more with 8% infill you can also just print the dick it self, sand it smooth, seal and make a mold the old fashion way, use this way for the best results. I recommend printing vertical if possible to get the resolution. pour the silicone to just bellow the surface then right at the end of the pot life smush the top on and add a weight to keep it from moving a good resource for silicone toy making: https://vimeo.com/candiru Have Fun!!