Fellow members have always led me to believe that 40mm template guides were not available in the USA, the Makita 3612C in particular. I, like most people only tend to read instruction books when things get desperate! I was just reading the booklet that came with my 3612C several years ago and see that a 40mm guide part number 164472-4 is an accessory. I then entered that number into a Google search and was surprised at what came up, including this US site.
http://www.homelumbercom.com/prodsp....com/prodspec.asp?key=product&table=Product&template=prodspec.asp&value=1644724
Give it a try, for other brands too.
http://www.homelumbercom.com/prodsp....com/prodspec.asp?key=product&table=Product&template=prodspec.asp&value=1644724
Give it a try, for other brands too.