

Everybody is on the right track that Torx or Robertson are by far the best driver heads, but y’all are not even looking at the threads and shanks. Lots to unpack here. If you are allowed an angle grinder or die grinder, then going longer might be better. Hardwoods don’t like fine-pitched threads at all, and while sheet metal screws can work in a lot of wood products it’s not ideal. Then, can you countersink, or are you going to be stuck the rest of your life with screw heads standing proud of the workpiece?
This is some serious shit, you guys, and should not be reduced to “Robertson 4 LYF!” We need a couple of committees and some use-case analyses and some brainstorming on workarounds with our inevitable compromise pick. It’s gonna be exhausting!!!
Looks to be a late-15th century prayer book, likely illuminated by Robinet Testard and owned by the Count of Angoulême.