Ordered a 30 cal Freechex from Charles Darnall and had a great service from him. Now while wainting for the item to cross the oacean I would like to prepare a base mount for the one ton harbour press clone (or I may say a chinese clone of the fright clone of a Us press) I bought meanwhile. So I would ask If anyone have a 30 cal if it possible to gave me the external diameter of the Freechex so to prepare an adequate fitment. I would also ask if is good or not using cocke or bier or others cans for gaschecks. From what I have read it seems Charlie is'nt keen on scrap material. Buth then I have found an old tutorial, on Freechex II, wich stated that cans are coated inside and out and this minimize alu-oxide action, wich is second only to diamant as abrasive power. So in case what other material I have to look at assuming cooper layers are difficoult to find and to cut?