Haven't had to do any routing that required bushings so I'm not familiar
with the setup. I bought one of those brass bushing sets with an adapter,
several collars and screw rings. I have a Hitachi M12V and a PC 690. I can
see how the bushing installs in the Hitachi but the PC looks a bit unsafe if
I'm following it right. The sub base of the PC has an opening that just
fits the adapter included with the set. The bushing and nut lock onto that.
However, the adapter just sits in the hole with nothing holding it in place.
If I pick the router up and turn it upside down the adapter will fall out
and hang on the bit.
Other than buying another sub base with a 1 3/16" hole I don't feel
comfortable using the PC. I figure I've missed a key step somewhere but
can't see it.
Of course, I may be wrong, I thought I was wrong once but I was mistaken.