I've been working on a workshop workbench, also using 20 series aluminum extrusion. Here's a picture of 2 of the 4 pieces: <a href="https://photos.app.goo.gl/AMaBwa5pRBQfqDPQ7" rel="nofollow">https://photos.app.goo.gl/AMaBwa5pRBQfqDPQ7</a><p>Aluminum extrusion is pretty nice to work with, though in retrospect I probably wouldn't do it again for the workbench. I was able to source it from China via Alibaba, and even with $200 shipping the pricing is way less than you can get it in the US. It was so inexpensive that I ordered a bunch extra in case I want to build a custom 3D printer or CNC or something. The extra was nearly free.<p>You can cut aluminum on woodworking tools. I went slow, and the cuts I got looked nearly as good as the factory cuts. They are quite sturdy.<p>My idea was that I could use the extrusion channels for mounting accessories or clamping. For example, mounting rollers when using it as an in/out feed table. A jig for flattening some raw wood using a router. Channels to lock the 4 into a 4x8 assembly table, but split it apart to store along the back and sides of the garage.