I do mine slightly differently to Steve but both will work perfectly. Here it is;
1. Dremel out the eye opening
2. Dremel out the inside of the eye so that the eyeball sits pretty nicely and the eyelid has the correct amount of thickness.
3. Use two part epoxy putty and put this inside the eye opening where the eyeball will sit.
4. Use liquid soap or detergent and put this on both the eyeball and the two part epoxy surface you put in the eye opening. The soap will stop the epoxy putty sticking to the eyeball. Also, make sure that you clean the resin surface really well as if it's still 'dusty' the epoxy won't stick as well.
5. Press the eyeball in place firmly so that the epoxy putty takes the shape of the eyeball perfectly. You will get excess putty that flow out of the opening which you will then need to trim away with a blade.
6. Use your fingers to smooth out the eyelid part and make sure the eyeball fits perfect. You have 6 hours before the putty sets rock solid so no rush.
7. I let the epoxy putty set for 6 hours without the eyeball. After it is set test fit the eyeball again.....if it's not spot on repeat with a bit more putty.
8. I just use a big chunk of blu-tac to set my eyeballs in. This way I can move the position of them if I want something different. I've had lifesizes for over 8 years and the blu-tac never let go.
Sorry......I can't show you a good pic. I've done heaps of life-sizes but don't really show my work much. Here is one that shows the eye;
http://www.therpf.com/showthread.php?t=210351&highlight=terminator
Hope this helps.
Cheers