timwhunt
Tennis Machine Lower Detail
Detail view of the lower portion of the main carriage. The white block is a piece of HDPE that holds the rod that the back of the carriage slides back and forth on to relieve the strain that would be on the hinge at the front. There's another piece of HDPE attached where the rod goes through the carriage to give it a slippery surface. Note that the mount for the elevation motor is still temporarily attached with a C-clamp. The threaded rod pointing towards the camera is spun to move the carriage back and forth (pivoting at the front).
Tennis Machine Lower Detail
Detail view of the lower portion of the main carriage. The white block is a piece of HDPE that holds the rod that the back of the carriage slides back and forth on to relieve the strain that would be on the hinge at the front. There's another piece of HDPE attached where the rod goes through the carriage to give it a slippery surface. Note that the mount for the elevation motor is still temporarily attached with a C-clamp. The threaded rod pointing towards the camera is spun to move the carriage back and forth (pivoting at the front).