I've made a few out of salvaged brass drainpipe from the overflow section,the old stuff runs about 1/16".Of corse it has to be cut and rolled out flat.Just use a propane torch to heat it and quench,it softens right up and works easy.Some of the old patch boxes that I've seen were no thicker.Dixie Gun Works did sell brass sheet material,I havn't found any place local that has it.I think DGW also has German Silver.They also have patchboxes as kits!Good luck with Your project,I know You'll enjoy it. :thumbsup: ::