Ok I have continued with the dread today. so far the arm is partially completed.
First I cut some strips of plasticard, one piece of H shaped plasticard and some plastic tubing
With them asembled I proceded to cut a bit of tube to be the body join
then I shaped a disc to cover the hole (something Im still bad doing)
so far I think I have a good arm for the dread.
If you are interested in the previous work here are some Dread previous posts: