The original project was too big for my printer, so this is a smaller and simpler version.
The stand can be extended horizontally as well as vertically. When used vertically the support thing is necessary.
At least two spacers must be used. Rotate X=90, Y=180 and Z=45 to print.
The rings can be rotated with Z=30 to fit the bed.
The spacers can be a little difficult to fit, just adjust with a knife. When the support is used, or more modules are assembled, use glue to fix it.