[p2p-research] Linear actuators without shafting -- issue in self-replicating machines

[Ryan]

  Sent to you by Ryan via Google Reader: Linear actuators without
shafting via MAKE Magazine by Sean Michael Ragan on 10/12/09



A major obstacle standing in the way of total self-replication by rapid
prototyping machines, notably RepRap, is that certain of the
components, particularly ground shafting (or threaded rod) for the
Cartesian robot's linear actuators, require greater precision than the
machines are currently capable of. Thingiverse user fdavies is engaged
in a noble effort to design printable linear actuators that require no
shafting and are instead based on the hinged Sarrus linkage
(Wikipedia). Excelsior!
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