Common sense steps in here and says: Separate the parts you want to be mobile from the parts you want to be inert. You have seen the result, and I know many have the skill to apply it.
-- Lawrence Hargrave
   
Lawrence Hargrave   Name:
Lawrence Hargrave
Type:
Scientist
Nationality:
Australian
Birth:
January 29, 1850
Death:
July 14, 1915
https://www.nutquote.com/quote/Lawrence_Hargrave