Glass-Filled Nylon is stiffer than regular nylon-12, because of the glass infill along the entirety of the part. This infill drastically prevents warping and breaking, especially for larger parts. Glass-Filled Nylon parts are highly heat resistant, which allows them to operate under elevated temperatures, making them ideal for uses in the aerospace industry, as well as many others. It’s important to note that Glass-Filled Nylon parts will be stiffer than standard unfilled nylon-12, meaning very fine features could be more brittle.