small parts casting

The door lock supports on the interior of my espada are broken. (see photo of door lock support in my drake espada photo file.) They are not available and I have been looking into having them reproduced. I can get them in plastic, but it"s been suggested that it would be much better to have them cast in brass or bronze and powder-coated, as the plastic parts routinely break. Has anyone had any experience with getting parts cast? Thanks. Peter