Adjustable coiled tube straightening tool

[thehomeengineer]

Hi olderdan
Thank you for taking the time to get in touch
The tube in one of the photos was used as a test piece and it was well and truely deformed to such a state I thought I might have to scarp it. The tool has made it reuseable and to answer your question the bobbins are not the same profile as the tube. The strightening process also doesn't seem to require much pressure from the bobbins, all I did when setting the tool, I simply used a stright solid bar of the same size as the tube to be strightened with the six bobbins in contact with the bar and when moved backwards and forward all bobbins rotated freely. Luckily this seems to work fine and I am pleased with the results so far.
The home engineer