I'm having trouble using railclone to create a circular bench as below and get a clean geometry. The idea is to create a parametric sized element, wich I could decide more or less the size (here 20cm) that can adapt itself to repeat itself and fit the whole circle without breaking. (and become 20,1 or 20,3 cm if needed, for exemple). I tried with various methods but failed to achieve a clean result. Any help appreciated.