Making the frame

I tried with a 6mm mild steel rod but found out it's not really strong to make my stool stable. Sadly, I forgot to take a photo before its shape is changed by testing.

Then I tried with a 8mm mild steel, a bit worried because it's quite heavy. But not really bad.

After that, start making the frame. Here is some checking after bending to get a right angle

Next step, welding and here is the result....

Done for the frame!!!