What kind of wood is suitable for joinery?

Blockboard, with a core made of natural wood strips in the middle and thin veneers on both sides, is also called large core board, which is one of the most important materials in decoration. The price of large core board is cheaper than that of thin core board, that is, plywood mentioned above.

It has low density, small deformation, high strength and good dimensional stability, so it is widely used. The middle batten of joinery board generally adopts poplar, paulownia, Chinese fir, Lu 'an and white pine. The surface of high-quality products is flat and smooth, without degumming, sand loss and indentation, with small thickness deviation and no obvious hollowness after sawing.

Advantages: simple processing technology and good nail holding force.

Disadvantages: Due to the influence of processing technology, the longitudinal bending resistance of the core material is poor, while the transverse bending resistance is good. In addition, the water content is high; The formaldehyde content is also high, and it needs to be treated before it can be used with confidence.

Market price: Many consumers choose a large core board, which depends on the weight and price. In fact, the heavier the core board, the worse the quality. Because of its heavy weight, this plate is made of miscellaneous wood. This big core board made of miscellaneous wood can't be nailed in at all, so it can't be used.

In addition, the core board with extremely low price will definitely have poor quality. Either there is a big gap or unqualified wood is used. Therefore, when choosing, it is best to choose a large core board of about 100 yuan. The quality of large core board at this price is relatively stable. The market price is 50-55 yuan, and a large core board is not needed.

Tips for purchasing: the formaldehyde content of blockboard is high, and the glue used for large core board must be improved after the national mandatory limit of decoration harmful substances reaches the standard. Therefore, it can be said that it is impossible to make a real green core board in 60 yuan in 50, and the E 1 grade core board meeting the national standard is already a meager profit in 90 yuan. Only E 1 grade large core boards can be used for home decoration. If the product is E2-grade core board, even if it is qualified, its formaldehyde content may be more than 3 times that of E 1 grade core board.

Yang Shulin, a bar in Yang Shulin, clung to Ding.

The above is just a reference. It's best to hire an experienced carpenter.