Finalizing my plans for purchase of new optics. According to the information from the sales guy at Laser Mechanisms the ideal distance for my new cutting head and collimator will be 350mm. The the cut quality enhancer and circular polarizer are a series of optics and its very hard to measure the length of the entire beam path. The sales rep at Laser Mechanisms gave me this drawing that shows a total length of 8.4 inches. The pic inventories all the distances in the optics chain which includes front brackets, the circular polarizer/cut quality enhancer, and a beam bend. The total is 13.45 inches or 341mm. This is passable because I think I can add another 10mm by adjusting the barrel of the extension out another centimeter.
Laser beam path length