PRODUCT EASY TO BE DISPOSED OR EASY REPRODUCTION WORK OF PART OR MATERIAL THEREOF

PROBLEM TO BE SOLVED: To shorten operation time for crushing a product by a method wherein a manual indicating an operational procedure in disposal or regeneration of a part and a material is appended to a mechanical product for which cutting is carried out in disposal or regeneration of the part and material, and a cutting position is marked on the part to be cut. SOLUTION: For a mechanical product, since there is a part 3 being valuable, in disposal or regeneration of a part and a material, cutting is carried out at a position of a surface indicated with a slant line, the part 3 is taken out, and the residual part is crushed with a shredder. In this case, as a method for marking the cutting position, there are methods such as drawing a line on the cutting position, application of a pattern so that the cutting position can be found, and drawing a line or applying the pattern at a position a specified distance apart from the cutting position. The pattern means a shape capable of specifying positions of an irregularity of the shape, a hole, etc., and there are those for decoration and functional one such as a vent hole. Further, the cutting position may be marked with a line or a pattern which can not be seen generally, but appears by applying exclusive use light.