Could you use threaded rods and threaded-on arm effectors to allow for easier tweaking or extending of arm lengths? Maybe two threaded rods in parallel like the bones in your forearm? Would give us something to do with all of those old Mendel Prusa rods lying around..
Something like that could make it easier to bootstrap a 1m LISA.
Thread rods for arms also makes me think that maybe you could design threaded arms where the 'shoulder' is able to extend outside of the build area (like chopsticks), to maximize build area at top/bottom. I think this could be done without additional motors if you could tie the motion of the lead screw rotation through a gear reduction to the threading of an arm and make it all linear? Or maybe I should just finish my coffee..
Something like that could make it easier to bootstrap a 1m LISA.
Thread rods for arms also makes me think that maybe you could design threaded arms where the 'shoulder' is able to extend outside of the build area (like chopsticks), to maximize build area at top/bottom. I think this could be done without additional motors if you could tie the motion of the lead screw rotation through a gear reduction to the threading of an arm and make it all linear? Or maybe I should just finish my coffee..