Hi, Jim Kelsey has updated the CAD files for the assembly and vacuum system including Parasolid format (.x_t file extension). They are available from the OLYMPUS web page: http://web.mit.edu/OLYMPUS/CAD.html Cheers, Douglas 26-415 M.I.T. Tel: +1 (617) 258-7199 77 Massachusetts Avenue Fax: +1 (617) 258-5440 Cambridge, MA 02139, USA E-mail: hasell at mit.edu