Originally Posted by
tegnamo
Yeah I had to spend quite a bit of time figuring out how to prevent rotating of the struts. There are a few connectors they sell which prevent it for sure. But not as robust as welding!
As you noted stopping rotation is a constant issue and the hardware is comically expensive. The connectors are all expensive, but the ones that have multiple connection points that stop rotation are comically expensive. Great for prototyping, but as you said, a few pieces of steel or aluminum tacked together will be stronger and cheaper.