Advantages: rich in layers, can go in-depth, and paint in detail. The hardness mark of pencil lead core generally uses “H” to indicate a hard pencil, “B” to indicate a soft pencil, “HB” to indicate a pencil with moderate hardness, and “F” to indicate a pencil with a hardness between HB and H. Arrangement (from…
1. Classified by form The types of pencils include: “log penholders”, “sharpened penholders”, and “pencils with caps”. “Ordinary penholder” means that the pencil manufacturer presses the lead of the pencil with a wooden rod. This kind of pencil requires the consumer to sharpen the nib before it can be used. In addition, there is a…
The pencil processing is as follows: Pencil board processing: 1. Unpack and cut the logs, cut squares and sew them into wooden blocks, and cut them into pencil boards with a board cutter after hydrothermal treatment. The length of the board is 184mm, the width is 73mm, and the thickness is 4.8～5.2mm. After heating (60～120℃)…
