The plate is ready to be sanded down and refinished. Before sanding, the agraffes are removed. I noticed while taking them out, it felt very tight to them turn up. There might be adhesive applied by the last rebuilder who may had a very hard time dealing with these little thingies. This piano has one agraffe insert and a large size (1/4") agraffe as repair from before. The rest are 7/32" in size. Oh, there is also a long-ago broken agraffe possibly from over tightening. The bottom part of that broken one is still in the hole. How to get it out? Hmmm. There are 3 way I have learned:
1. Put the top piece back on, use friction to turn the bottom up since brass is soft and can be easy to turn up.
2. Tap a sharp slotted screw driver in, then turn it out while hammering it down.
3. Drill through the bottom part with a small bit, increase the bit size and drill until a thin layer of brass is left inside the screw hole. The thin piece can then be easily chipped out.
4. Easy-out or screw extractor. Drill a hole for the size of the easy-out, tap in the extraction bit, turn it counter clock wise by hand to extract the broken brass bottom. This is the last solution. Easy-out can do big damage.

This operation is documented on two pianos, a Steinway L and a Steinway O. Work is guided by shop owner Mr. Jude Reveley at Absolute Piano Restoration. Before working on bridge, the plate is clamped at ideal position. Normally 2 clamps are enough. The pinblock is being glued down under plate, thus many clamps here.