Hi Ballanstanksian , yes you are probably right as the copper and brass would be more durable , have only used the plasti card or styrene once before , easy to use. With this set pf photo's they are of the capstans for the main winch's , made from ply ,dowel and plasti bond, then parts of the main and lazy line winch's, making the brake wheels, with these winch's they originally had the manual wire guides prior to the hydrolic guides.Then the Karli raft the aft door ( Colonial teak) of the top cabin and the watertight doors for the main deck bulkhead , starting on the painting of the hull (Brunswick Green) and applying the 2nd undercoat to the nozzle area. Cheers .