Hi. I have contacted a peson who can make us a mould for the screw. But i do not have the exact specs of the screw. Moreover are u going to scale up the model as sugested by Erectus or keep the same. Please mail me the exact specs of the screw so that i can show it to the concerned person to get the mould.
Also tell me about the model of the screw. Are u making it big or not? Reply ASAP.