Yes, you can cut Aluminium with your mitre or table saw. I regularily cut aluminium on my mitre saw and it is still very sharp. Use a lubricant. I am using rancid organic wallnut oil. Its fancy but rancid. : )



I used 20x20mm Aluminium that has build in slots to receive T-nuts. This makes assembly a lot easyer but it is optional. You can use regular square tubes just as well!



I used leftover aluminium. They all had slightly different lengths, so I ganged them all up and cut them to length in one go. This saves a lot of time and work, but you need to make sure that they are clamped down good!



The legs and the diagonals should be about 1.2m long for a 3.5m high tree.