I just tried to make a big ring for joint testing.
The ring's outer diameter was 160mm.
And It is devided by 4 parts.
I adjust the dimensions of the joint part for perfect connection.
The wall thickness is 3.4mm.
The projection part is 1mm.
The groove part is 1.4mm.
And the results value of outer diameter was 161mm.
I think my UP needs re-calibration.
I'd like to try more bigger one!
