When choosing a horse nose router bit with different degrees, it's important to consider the specific application and the desired outcome you want to achieve. Here are some factors to consider:

1. Degree of Rounding: The degree of rounding refers to the amount of curvature or roundness of the profile created by the router bit. Horse nose router bits are available in various degrees of rounding, such as quarter-round (90 degrees), half-round (180 degrees), or full-round (360 degrees). The choice depends on the level of rounding you want for your project.

2. ize and Proportion: Consider the size and proportion of the workpiece or edge you are working on. A larger degree of rounding may be suitable for larger pieces or edges, while a smaller degree may work better for smaller or more delicate projects. It's important to strike a balance between the desired aesthetic and the overall proportions of the project.

3. Project Requirements: Consider the specific requirements of your project. Different degrees of rounding can create different visual effects and styles. For example, a sharper degree of rounding may create a more defined edge, while a larger degree may result in a softer and smoother transition. Consider the overall design and style you are aiming for when selecting the degree of rounding.

4. Material and Thickness: The material and thickness of the workpiece should also be taken into account. Harder or thicker materials may require a larger degree of rounding to achieve the desired effect, while softer or thinner materials may require a smaller degree. Experimenting on scrap pieces of the same material can help determine the best degree for your specific application.

5. Personal Preference: Ultimately, personal preference and the desired aesthetic play a significant role in choosing the degree of rounding for a horse nose router bit. Consider your own style preferences and the overall design intent of your project.

It's worth noting that some horse nose router bits may have adjustable profiles, allowing you to vary the degree of rounding by adjusting the bit's position or settings. These adjustable bits offer more flexibility and can be a good option if you need to achieve different degrees of rounding with a single tool.

When in doubt, consult with experienced woodworkers or seek advice from knowledgeable professionals who can provide guidance based on their expertise and experience with different degrees of horse nose router bits.

Remember to always follow the manufacturer's recommendations and guidelines for the specific horse nose router bit you are using to ensure safe and effective operation.