The edges of tubes used backside were cut like this.

Then tacking. Check the balance and adjust it. Then welding.

Done.
It is to wider than last my seat built from iron seat. If the width is narrow, the frame touches my back. It may cause pain.
Today I looked for mesh cloth and narrow rope which is used sky diving. But I couldn't get better idea.

Then tacking. Check the balance and adjust it. Then welding.

Done.
It is to wider than last my seat built from iron seat. If the width is narrow, the frame touches my back. It may cause pain.
Today I looked for mesh cloth and narrow rope which is used sky diving. But I couldn't get better idea.