I am on the verge of building my first CNC hot wire cutting machine. I want to be able to build architectual designs such as crown moldings, columns, ect for remodeling homes that friends buy and sell to make money. I am trying to finalize my plans and need to find a good method of moving the gantry, I think using a belt might be the cheapest and best way, but I also cannot find a supplier of the large blocks of foam needed.
Does anybody have any resources for this EPS foam or good articles for large scale hot wire cutters? I am leaning towards putting a mill on the end and making it a 4 axis carving machine rather than a wire, but that would be an upgrade after I prove to the wife that I can make cash with the cheaper version.
Any help would be appreciated.