(1) I've been thinking of getting a certification in ANSYS or Abaqus (it's relatively cheap). Would it help if I get some certs, or would it be enough to have expertise in several open source finite element programs? - think deal.ii, PETSc, MFEM, MOOSE, FreeFEM, FEniCS and the like. I really like to use the latter because apart from being free, they give me more freedom and I can use them with parallel computing on UNIX machines.
(2) Regarding manufacturing and machines/machining, any book or resources that stood out? I'm most familiar with the Machinery's Handbook.
(3) For design, did you use a tablet? I've been looking into buying one and use it for design, preferably with FOSS. Any recs?
Thank you for your comments,
M.