So I have been brainstorming about what to make a press from. Wanted to use stainless steel but that requires welding and well stainless isn't cheap. Then I thought of aluminum easier to work with not really necessary to weld but cutting and drilling isn't the easiest with my tools on hand. Then i thought of food safe plastics. Teflon is spendy. But HDPE is pretty cheap. I can thread it and put threaded inserts. Its non-reactive, impact resistant, and seems like a winner price wise. I will investigate more but I think I found my material.