Picokeystone extraction a success

Yesterday’s extraction of the picokeystone that was cut over the weekend went well. I came in Monday morning and gently placed a tiny glass spatula over the keystone to hold it in place before starting the final cut, preventing it from popping out and being lost. I then inserted a pair of microforks and pulled it out without much difficulty. The upper left-hand corner in the picture is the “pico” part of the keystone.