Learn how to build and use a mini mortising jig for loose tenon joinery in this comprehensive woodworking tutorial. Discover the step-by-step process of constructing the jig, including making the platform and fence, and learn about guide bushings and their importance. Explore techniques for setting the offset, width, and depth of your mortises, and gain practical knowledge on using the jig effectively. Perfect for woodworkers looking to create strong joints without expensive specialized tools, this video demonstrates how to achieve professional results using a trim router and custom-built jig.