Octagon Injection Molding & assembly introduction to Companies that have suppliers like Octagon Injection Molding . Located in Somerset Wisconsin. Here at Octagon Injection Molding we created a business with pride and positive production and tight tolerances to serve customers like your company with the best quality injection molded parts and assembly. Thanks Keith Dillon Manager Our Machine Sizes 110 50 ton 110 ton 9 oz 110ton 2.7 oz