After calculating and saving the Spring Back Value we can use this calculations to correct the LRA of a new nominal tube.
The only thing that TubeShaper is applying the spring back correction to the 1st straight.
This is the only straight that has no elongation error, because the rotation and the bending angle are applied from the second one forward. Actually the TS is correcting the tube on the 1st straight, and after the 1st measurement he bring's it back close to the nominal.
If we don't apply SPE correction on the 1st straight, the customer has to do 1 correction less and he has 1 less scraped tube.
Customer support service by UserEcho