Quote Originally Posted by th62 View Post
Interesting! I made one some time ago but couldn't get a convex shate good enough to magnify clearly so I just polished the end flat and scribed crosses top and bottom. To get the cross hairs as fine as possible i used a sharpened hacksaw blade. I also lit mine with an LED.
Hi there, yes the lens has to be a particular shape thats why I researched online using one of the many Lens calculators.
Yours looks cool with the LED