Scale Soaring UK

I am altering an old 3M span flying,the original wing joining method of Groupner box and blade,cannot be used (no blade).I am increasing the sweep back.The only practical access to the structure is by removing part of the wing sheeting.I was hoping to use carbon tubes,one sliding inside the other.I cannot find fitting tubes.The outers are ground,but the inner.Any ideas welcome

Barrie B

You could try here: https://www.carbonfibreprofiles.com/

Got mine from here

https://www.topmodel.fr/en/wing-joiners-C1088

Many thanks,both of you

Barrie B