Thanks to everyone for the replies. For replacement of existing doors, yes,
the advice to match what is already there would be the best approach. I have
found (the hard way) that assuming anything about how something was built
will bite you in the butt. For new construction, the 1/4" reveal sounds
about right judging from the ones I have measured around the house.

"CW" wrote in message
k.net...
I have been to a number of DIY type websites, even watched the Router
Workshop show on hanging doors. There is one thing that NONE of them ever
say. They all talk about positioning of the hinge along the edge of the
door
(although some just say to position them!!!) from top to bottom but non
say
how deep along the thickness (setback). Putting them back far enough to
just
clear the barrel would put them entirely through the thickness of the door
so they would be seen on the other side. Looking at the ones around my
house, the barrels are set out away for the door a ways. What is the
standard? There must be one. I have read articles that gave really helpful
advice such as "buy a commercial but marker" or "buy a commercial router
template". That's not much help if you want to make your own template. I
need a measurement. A recent thread about his brought to mind the idea
that
a template would be quite easy to make but, it occurred to me, I could
quite
easily make a template to fit the hinge but, where to position it, I do
not
know. There are those of you out there that have done one to hundreds of
these things. Enlighten me please.