Just finished making a folding "express" style sight and thought I would share some pics of the process I went through to construct it. I started with cutting a chunk off my favorite donor, Spike.
Next I cut a slant on the back, drilled a hole for the blade relief and cut off the excess in the front to form the blade, The sight was overly tall so I cut it down some as well:
I sawed a couple of slits to begin forming the ears for the folding leaf at an angle, then finished the slots with a graver. Then I punched and drilled holes for the pivot pins. Also drilled out some of the waste between the ears:
Now come the fun part, I chiseled out the extra metal with a flat graver and a cold chisel.
I had broken a drill bit on one of the pin holes and after removing the metal between them it was obvious it caused the hole to wander out of line. So I cut a section of a brad nail, fluxed the hole and tapped the nail in to fill the hole. After that I silver soldered it in place. I re-drilled the hole and things lined up much better.
A leaf was cut from a steel scrap, shaped and carefully fitted:
A relief slot was cut for the bottom of the blade using a rounded graver:
Using my drill press, I drilled the pin hole through the sight blade, about half from each side. As soon as the second hole met the first I snapped another drill and it jammed in the hole. After saying
lots of words that I can't use here, I heated the whole blade and drill bit to bright red and let it coll in some wood ashes. I was able to drive the broken bit out, and finished up the holes with a hand crank drill and a bit in a pin vice.
I thinned and shaped the blade with a file, leaving full width at the hinge.
I finished it up by cutting some small slots and folding up a silver sight for the front. The front sight will be filed to shape after installation and sight in, and of course the slots will be enlarged after both sights are on the gun. The front sight is fine silver and fairly soft so I soldered a brass plate to the base. It should show a contrast when the sides of the sight are filed to an angle after installation.
Thanks for looking!
Curtis