[quote name='DaveN' timestamp='1376697965' post='147429']
I ended up using a 4" belt (bench mount) sander with 60 grit (I think) for the rough cut. Tried to find a finer belt but couldn't. I used a lot of water as a lubricant. After the all the deep pits were gone I went to the hardware store and bought a sanding attachment (hook and loop) for my 3/8 drill and put on 220 (I think again but I can check) grit pads, put in the vise and locked it on. Lubed and ground for quite a while until even. If you wipe the lens with a rag it will dry and go white so you can see your work. Once I felt it was even I went to the chemist, well, not really, a friend of mine that owns a glass company and I bought some cerium oxide. I proceeded to use my buffing machine and a muslin buff to polish the glass with Tripoli (a course Jewellers cutting compound) at first and then cerium oxide paste; takes a long time as the glass is so hard.
Probably took 3 hours if you remove all the experimentation and shopping. I think I bought 2 fog lamps for 150.00 and invested 30.00 in materials. I now have one spare passenger and a perfect driver's side for lamp. Better than 450.00 each new!
[/quote]
Dave - Thanks for that
Rob