Ken,
Being that I am an old fellow I need a nice WIDE front sight if I am to be able to hit with it. So I make mine out of an old silver dollar coin that is folded over and soldered with tin/silver solder. The sight ends up about 1/8th inch thick. I make it with a rear face slanting back at a 45 degree angle so the surface reflects light towards the shooter - my guns are hunting guns and are often put to use in low-light conditions. If the gun has a rear sight the top edge is sharp, dead-flat horizontal and the notch is square and wide enough so that it appears three times as wide as the front sight when the gun is shouldered. This gives me a nice wide Patridge-pattern sight picture.
I have learned over many years that this is what I need to be able to hit. So, I make my sights so I can hit.
Best Regards,
JMC
John Cholin