How to reduce glare in artwork...

[Sugared Ellipses]

I have some artwork that I'd like to photograph. Unfortunately the varnish that covers them produces lots of glare/reflected light. How can I eliminate this glare? I was wondering if a circular polarizer might help with this. Any ideas?

Thanks in advance for any advice you can provide!

[edbayani]

years back (ages, during the time of film) i was able to acquire a roll of 20'' wide gel polarizers that i can cut to the size of the light i used. with these, and the circular polarizer,
you can eliminate the glare by rotating the gel that i put in frames.
if this is not available you can try varying the angle of your lights to get minimum glare.

[RecurrentNerve]

A big, soft light source and a polariser would help. If you're using daylight, stick some tracing or baking paper over the windows to diffuse the light.

[zona5101]

Polarizing the light source is an excellent option but maybe hard to execute. Just polarizing the lens will probably not get you the results you want as there still will be parts of the reflection that won't be eleminated. Without purchasing any additional equipment you can just move your light(s) so they are outside the family of angles. I linked a simple explaination below. I would recommend the book "Light: Science and Magic" byFil Hunter, Steven Biver and Paul Fuqua.
My Mother in Law and the Family of Angles (an Intro) | DIYPhotography.net