Below you can find the Rods are usually made from fiberglass & this material which needs composite blank to temper its brittleness Jeopardy Words Answer. The answer to Rods are usually made from fiberglass & this material which needs composite blank to temper its brittleness has 8 letters. This clue belongs to the The tackle box category and is part of Jeopardy Word Level 1904. If you scroll near the bottom you will find other clues and answers part of level 1904