This app calculates the number of timbers you need and how to cut them out. How to: https://www.youtube.com/watch?v=6V-o2vYYMfs If you enter the "Length" and "Quantity" you want to cut out and perform the calculation, the "Length" and "Quantity" of the lumber to be purchased will be calculated. The app also creates a cutout table that shortens the scraps. The calculation result can be printed on the printer. (You need to install the driver for your printer) The "Length" of the lumber can be c