Excuse me for being snappy.

I just pictured some one with a hand drill w/ an 11/16 bit and thought I
might urge some caution. If you have a lathe and a mill you probably had
thinwall brass grab on you so you now know how to avoid it.

--

Roger Shoaf

About the time I had mastered getting the toothpaste back in the tube, then
they come up with this striped stuff.
wrote in message
...
On Wed, 6 Jul 2005 10:49:40 -0700, "Roger Shoaf"
wrote:


wrote in message
.. .
On Tue, 05 Jul 2005 20:35:24 GMT, Ivan Drucker :
We are restoring our apartment, and we decided to keep our vintage
glass
doorknobs. Unfortunately, the roses (the metal donut which the knob
sits
in -- do I have the name correct?) that we have are flimsy and cruddy
looking. We tried to buy new roses from Rejuvenation Hardware, and
found
some nice ones, but the opening is too small to accomodate the
doorknobs
-- the opening is 5/8 inch, whereas the original roses have an opening
of 11/16 inch.

get an 11/16" drill bit.


You say this like someone who has never tried something like this.

The escutcheon is probably 2 to 3 inches in diameter, and made of stamped
brass. It is not easy to get a clean hole under these circumstances and
you
would need to make a fixture. Also if the escutcheon is stamped brass
drilling it out will eliminate the bearing surface.


I've done things like this many times. if I was in a mood to tinker I
might set up the lathe for it, but probably I'd do it on the mill,
with a drill bit. it's possible that the part would be too thin to
drill, as per another post, but the OP mentioned nice ones from
rejuvenation HW, so I'm assuming castings. if they are too thin to
drill, I'd go with a reamer.