Hey gavztheouch, As you told that you are interested in making a simple plastic injection mould tool and were looking for a good mould-making forum, Then you can check it on the internet simply by searching it, I am also part of different forums and this one is among them, ukbusinessforum is also a forum where you can find injection moulding related threads, or you can check some of the websites like rutland plastics, which provide content and service on plastic injection mould tool.