I found that the scraper I usually use was worn out and couldn't be cut at all, and I found a replacement blade with a monotaro. I ordered it immediately and received a new one in 2 days. I will order when it gets worse (Translated by machine.)
I used to sharpen a triangular file to make a tool, and thanks to the purchase of this tool, I no longer need to sharpen it by exchanging it. However, the drawback is that it is easily chipped. (Translated by machine.)