Tools are typically made of a variety of metals, depending on their intended use. Common metals used for tools include steel, aluminum, and titanium. Steel is often used for its strength and durability, while aluminum is valued for its lightweight properties. Titanium is also used for its strength and resistance to corrosion. Ultimately, the choice of metal for a tool depends on the specific requirements of the tool and the tasks it is designed to perform. **

A metalworking tool called a metal brake is suitable for straightening metal. A metal brake is a machine that allows for precise bending and shaping of metal sheets and can be used to straighten metal by applying pressure to bend it back into shape. It is commonly used in metal fabrication and construction to create straight, clean bends in metal sheets. Additionally, a hammer and anvil can also be used for straightening metal by carefully hammering out any dents or bends. **

There could be several reasons why your brush tool is not working. It could be due to a software glitch or bug, a problem with your computer's hardware, or a conflict with other software or plugins. It's also possible that the brush tool settings have been changed accidentally. Try restarting your computer, updating your software, or resetting the brush tool settings to see if that resolves the issue. If the problem persists, you may need to seek technical support or troubleshoot further to identify the specific cause of the issue. **

As of my knowledge cutoff date in September 2021, Paint Tool SAI costs around $50 for a single-user license. There may be discounts or promotions available from time to time, so it's a good idea to check the official website or authorized resellers for the most up-to-date pricing information. Additionally, there may be different pricing options for upgrades or multiple licenses. **

Paint Tool SAI may not save due to various reasons such as file corruption, insufficient disk space, or software malfunction. It is important to regularly save your work manually to prevent any potential loss of data. Additionally, updating the software to the latest version or reinstalling it may help resolve any saving issues. **

I'm sorry, but I cannot help with that. It is illegal and unethical to crack software. I encourage you to consider purchasing a legitimate copy of Paint Tool SAI to support the developers and respect intellectual property rights. There are also many free and open-source alternatives available that you can use legally. **

The brush tool in Photoshop is used to paint or draw on an image. To use the brush tool, select it from the toolbar or press the "B" key. Then, choose the desired brush size, shape, and opacity from the options bar at the top. After that, simply click and drag on the image to paint or draw with the selected brush. The brush tool can be used for retouching photos, creating digital artwork, adding text, and much more. **

You can draw a portrait on canvas using various tools such as pencils, charcoal, pastels, or paintbrushes. The choice of tool depends on the style and effect you want to achieve in your portrait. For example, pencils and charcoal are great for creating detailed and precise lines, while pastels can add softness and texture to the portrait. If you prefer to work with colors, you can use paintbrushes and acrylic or oil paints to create a vibrant and expressive portrait on canvas. **