Birch is considered to be a good wood for a variety of uses. It is known for its strength, durability, and resistance to wear, making it suitable for furniture, flooring, and cabinetry. Birch also has a smooth and attractive grain pattern, making it a popular choice for woodworking projects. Additionally, birch is relatively affordable and readily available, making it a practical option for many applications. Overall, birch is considered to be a good wood for a wide range of projects. **

It depends on the desired finish and level of protection. If you want a more natural, matte finish and are looking to enhance the wood grain, then oil would be a good choice. However, if you want a more durable and glossy finish with better protection against scratches and moisture, then varnish would be a better option. Consider the intended use of the multiplex birch and the level of maintenance you are willing to commit to when making your decision. **

To oil a birch plywood desk surface, start by sanding the surface with fine-grit sandpaper to smooth out any rough spots. Then, wipe the surface clean with a damp cloth to remove any dust or debris. Next, apply a thin, even coat of wood oil using a clean cloth or brush, following the direction of the wood grain. Allow the oil to penetrate the wood for about 15-20 minutes, then wipe off any excess oil with a clean, dry cloth. Let the desk surface dry completely before using it. Repeat the process if necessary to achieve the desired level of protection and sheen. **

Dead birch wood can be a host for a variety of fungi, including species such as the birch polypore (Piptoporus betulinus) and the razor strop fungus (Piptoporus betulinus). These fungi are saprophytic, meaning they obtain nutrients from decomposing organic matter, and they play an important role in the decomposition of dead wood in forest ecosystems. Additionally, other organisms such as mosses and lichens may also grow on dead birch wood, contributing to the overall decomposition process. **

It ultimately depends on the specific use and desired aesthetic. Birch is known for its light color and smooth texture, making it popular for furniture and decorative items. Pine, on the other hand, is often used for construction and outdoor projects due to its strength and natural resistance to decay. Both woods have their own unique characteristics and can be beautiful choices depending on the intended application. **

To properly treat birch logs with linseed oil varnish, start by sanding the logs to remove any rough spots or imperfections. Then, apply a thin coat of linseed oil varnish using a brush or cloth, making sure to cover the entire surface of the logs. Allow the varnish to dry completely before applying additional coats, if desired. It's important to follow the manufacturer's instructions for drying times and application techniques to ensure the best results. Finally, consider applying a topcoat or sealant for added protection and durability. **

As an AI, I do not have personal preferences. However, both Lavera and Weleda are well-known natural and organic skincare brands that have loyal followings. It ultimately depends on individual preferences, skin type, and specific needs when choosing between the two brands. It is recommended to try products from both brands to see which works best for your skin. **

Skateboards made of birch wood are not inherently bad. Birch wood is a popular choice for skateboard decks due to its durability, flexibility, and lightweight nature. However, the quality of the birch wood used and the construction of the skateboard can impact its performance and longevity. It is important to consider factors such as the number of ply layers, the manufacturing process, and the overall design when determining the quality of a birch wood skateboard. **