Why Are Easier-to-Sand Gel Coats So Easy to Work With? Is It Because of Their Low Hardness?

No, the hardness of these gel coats is not low. While sanding properties are related to hardness, the ease of sanding in these gel coats is primarily due to the special fillers used. These specific fillers enhance the sanding speed rather than indicating a lower hardness of the gel coat.

This is similar to how coarse sandpaper sands faster than fine sandpaper. The powdery substances seen in the image represent the easy-sanding fillers. There is no need to worry about sedimentation; a simple mixing before use will suffice. As shown in the accompanying image, the results after using an easier-to-sand gel coat are commendable, especially for processing large-scale original molds. This makes it the best choice, as time savings can significantly reduce costs.