Replies

1. 
   piker | Jan 30, 2009 07:09pm | #1

   Diagonal lines from opposing corners to locate center & use hole saw or fly cutter in drill press. Made one from a piece of bakelite 5 years ago & still in service. Bought a commercial one with removeable center inserts but it's still in the package - no need to change it yet. Rabbetted hole in router table should be slightly smaller than plate, then trim plate edges for a snug fit when it's inserted. Cut the hole & rabbitt too big & there's no going back - except duct tape!

1. 
   beemerbob | Jan 31, 2009 02:36pm | #2

   I haven't heard or read the word Bakelite in years. I remember when it was used in radio cases and everything. I'm getting more involved in the design because I want to make the hole so that inserts can be used.Thanks for the reply.

1. 
   piker | Jan 31, 2009 02:54pm | #3

   You're right, the piece of bakelite came from a a large piece of electrical equipment that was being scrapped ( I worked 39 years as an Electronics Technologist in Marine Electronics, Avionics, Test Equipment repair/Calibration, & last 10 years in the Engineering section as an Installation Technologist). Tried using a fly cutter to create the rabbitted lip to hold inserts but became a PITA so gave up & just made the hole large enough to accomodate my largest bits (safety police will love that!)