68gtxman
I used to reMember
Interesting idea. What mirror did you use ?
This one is 5" OD. http://www.ebay.com/itm/CIPA-49502-...Parts_Accessories&hash=item19e0d82bd5&vxp=mtr
How would we cut it down to 4&3/8 ?
Yes, that one looks like it would work just fine, plus it is so cheap that if it broke during the sizing, you wouldn't have to cry.
To cut it down, I removed the glass mirror from the frame. Then traced out the correct circle onto the glass. Cutting would be by using a Dremel with a cutoff wheel to score the edge of the marked circle, making extensions to the edge of the glass so each break could be fairly straight. Then use pliers with electrical tape over the jaws to snap each scored section until you have a rough circle. Finish it up on a belt or fixed disc sander using fine (250 grit) sand paper.
Good luck!