# Jointer ![Jointer](/files/-Mhnp_97mI709hIHhlJp) ## Safety Level: Red ### Tool Description: Woodworking jointers are used to make one face/surface of a board and one adjacent edge/surface perfectly flat and square to each other. Jointers are useful for flattening out boards with twists, cups, bows, and uneven surfaces and preparing rough lumber. A jointer are used along with a planer and a table saw when a board is prepared to be 4-square (4s), a board that all four adjacent surfaces are square to each other. ### Tutorials & Training Materials: [Basic Jointer Safety & Use video (5 min)](https://www.wwgoa.com/video/using-a-jointer-safely-000284/) ### Manual: No manual available ### Extra Information: ### Quizzes : [Basic Jointer Safety & Use Quiz](https://docs.google.com/forms/d/1sWKxTi4v9hwKbo3YiJWOt6U9Y4lDkpPMdfcWkYIUEj0/edit?usp=sharing) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.thefutureforge.org/maker-spaces/wood-shop/jointer.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.