The good and the bad of wood is not determined by the severity
2, listen: If you want to know how the quality of the joinery board, with the listening method is a better way, the blockboard will stand in the board, the board is not the same, but the board is not the same, On the ground by hand or other blunt in different departments to tap, if the sound is very different, then there is a certain quality problems, there may be empty inside, if the sound is more uniform, that the quality is acceptable
5, saw: the best conditions, then the board saw the saw, to see its internal quality, slat texture is dense, with or without obvious cracks and rotten rotten wood, decaying wood may exist in the incubation, the future prone to insects Borers, with or without large gaps.
4, smell: with the nostril paste into the material smell, if the blockboard fragrance smell, indicating formaldehyde content is low, if the smell of pungent is a higher formaldehyde content.
3, touch: hand touch the blockboard, Glulam and multi-layer board surface, high-quality board should feel dry, smooth, horizontal touch without wave, indicating low moisture content, good flatness.
1, see: the quality of the board should be smooth and smooth, no defects, from the side to see whether the thickness of the core plate, blockboard and multilayer will have to observe whether the phenomenon of overlapping core. The panel is made of rice (usually white). You can keep the long-term smoothness of the panel. Generally a stack of plywood texture is no difference between the artificial veneer veneer, dyed veneer, just in the selection, dipped in water, gently rub off, fade that is dyed; natural veneer plywood nice,
