Paper-cutting machine and method of cutting paper

A paper-cutting machine comprising:

• a board;
• a rail support secured to one end of said board;
• a rail pivotally supported at one end thereof by said rail support so that an opposite end thereof is movable up and down, wherein said rail has two side surfaces and said rail support has two guide pins which are subjected to a biasing force from respective springs so as to resiliently support both side surfaces, respectively, of said rail when moved downward;
• a guide member secured to an opposite end of said board to that the opposite end of said rail is fitted to said guide member;
• a paper holder provided between said rail and said board by mounting on an underside of said rail through a spring so that said paper holder is resiliently pressed against said board when said rail is moved downward;
• a hook provided at the opposite end of said rail so that, when said rail is fitted to said guide member, said hook is engaged with said board to maintain said rail in the fitted state;
• and
• a resiliently movable, rotary cutter blade slidable along said rail to cut paper which is held by said paper holder, said rotary cutter blade being mounted rotatably on a cutter blade holder.