▂▃▅▇█▓▒░𝙳𝚎𝚜𝚒𝚐𝚗░▒▓█▇▅▃▂
Use this model for your designs. I replicated it from my E3D hotend to use it for further projects. All the sizes are documented in “E3D_Volcano.pdf”
The author hasn't provided the model origin yet.