What kind of putty material is used to make the wood finger joint defective?

Recently, some online users have been asking: What kind of wood filler is typically used to repair the joints in Pinus sylvestris?

Answer: Pinus sylvestris, along with radiata pine finger joint plates and laminated timber, are considered premium wood materials. These types of wood are processed through jointing and integration to improve their overall efficiency. However, one major challenge remains: how to effectively eliminate visible flaws such as nail holes, cracks, or other imperfections that can affect the final appearance of solid wood products.

Repairing surface defects like nail holes, cracks, or blemishes on these high-quality wood products has long been a challenge for many wood manufacturers. Traditional methods often fall short, leading to unsatisfactory results or even additional costs due to rework.

Currently, some manufacturers have started using atomic ash—originally developed for the metal industry—and applied it to wood products. However, those who have tried this method know that it comes with several drawbacks. Atomic ash tends to be too hard to polish, difficult to color, and challenging to work with. It dries too quickly, making it hard to apply evenly. Moreover, after prolonged exposure, it can swell and lose its effectiveness. Some companies have also experimented with pig blood-based fillers or homemade putties, but these alternatives still fail to deliver consistent quality.

Fortunately, a new solution is emerging. Some forward-thinking companies are now using nano-environmental plant fiber technology to develop a next-generation water-based, eco-friendly wood filler designed specifically for the Chinese market. This innovative product offers better adhesion, easier application, and a more natural finish, making it an ideal choice for modern wood manufacturing needs.

Metal Plate

Heilongjiang Junhe Building Materials Technology Co., Ltd , https://www.junhejiancai.com