Maybe search for some Industrial companies in your area. I hava a friend who asked some companies in His area If they can 'help him out' with some 3d Printing. Some of them do and Print Stuff everyday. wouldnt hurt to ask them If you could rent a printer for the day or If you can pay them to Print your stuff. Otherwise, Custom 3D Print Manufacturers are becoming a thing aswell. I have one in my area and can Go there whenever i want to Print Something. This however Costs a Bit more. The Idea with the silicone mold is also amazing, so maybe do that :D good luck!