Various arrangements of pinned or cantilevered cards may act as {HEAD ~ a pusher}, bender or other motive actuator, and {TAIL ~ structures} such as powered bellows may be formed directly by folding one or more suitably patterned cards 
Various arrangements of pinned or cantilevered cards may act as { HEAD ~ a pusher } , bender or other motive actuator , and { TAIL ~ structures } such as powered bellows may be formed directly by folding one or more suitably patterned cards
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH