Is there no muffler shop or fence shop around there JM, take a concrete tool, trim the blade, take a section of 6" pipe, a little grinding and welding and you would have the tool. Prototype would be easy. Manufacturing, that would be the trick.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."