Hey everyone! I'm planning to build a raised flower bed for my garden, which will be 3m long, 0.5m wide, and 0.5m high. I want to create two tree-like structures to support it, similar to what I've seen at the Stuttgart airport. Each tree will need to hold 1.5m of the bed. For materials, I'm going with aluminium bars since they're affordable and easy to work with. The challenge is connecting these bars since each root will branch into four segments at specific angles. I have access to a 3D printer and thought about making carbon fiber joints like those at the airport. However, I'm concerned about issues like thermal expansion and the chemical interaction between carbon and aluminium. Is using carbon fiber the best approach, or should I consider another method?
1 Answer
For your project, welding the aluminium bars would be the way to go. Since aluminium can be a bit soft, and you'll have a heavy, wet flower bed on top, TIG welding would give you a strong, durable connection. Many local fabrication shops can help you out, and if you bring your own materials, it shouldn't cost too much!

Is there any way to make it demountable?