Try a search in the Orchid archives, as this has been discussed
before, with many interesting comments.
Also, there exists a discussion group for people interested in
making eyeglasses (and Jo Haemer is a member):
Eyeglasses by Jewellers and other Metalsmiths
One good reason to join facebook is to discuss jewellery-related
things with your peers. But it's not a really a place to baldly ask
for free advice for starting up - it's a place to share your efforts
at making a frame, so if you post and explain your goals and upload
images (it's a closed group) then ask advice on the particular point
you're at, you may inspire useful replies.
You will also find announcements of any eyeglass-making classes
tutored by members. The latest announcement is this one:
I'm teaching two workshops on making eyewear this summer. The first
is a 5 day class at the Oregon College of Art and Craft in Portland,
Oregon, June 26-30, 2013. They're taking registrations now. Details
here: the top of a page talking about a casting class, keep going
down till you see "Making a Spectacle"
Then July 19-21, 2013, I'm presenting a lecture on my work at a
conference hosted by the Colorado Metalsmithing Association (CoMA).
After the conference, I'll teach a hands on workshop for another
three days. It's all happening in Salida, CO, and I so look forward
to it. Last fall I taught for the CoMA group, and they were
incredibly interesting people, very skilled, highly motivated.
Details coming, here's a start:
Brian Adam (group founder)