Posted: Tue Feb 12, 2008 12:33 pm
The 505 has the 510's larger, ribbed table, but not the extension tubes and floating tables. By contrast the 500 has a smaller smooth-surfaced table. You can also look at the carriage: the 500 has a lever similar to the quill handle for raising the table, whereas the 505/510/520 have a circular crank.