Here we have the infamous lifting pickguard, familiar to many players of older Martins, Guilds, Gibsons, etc. Our project Guild clearly suffers from this syndrome.
For decades, American guitarmakers used celluloid pickguards glued to the top. The celluoid shrinks over time, and begins to pull off from the top. In some instances, it may stay attached, but the shrinkage causes splits or cracks.
In any event, I need to reglue the edges of the pickguard where it's coming up off the top.
The caul's made out of birch ply - it's solid but it chipped here and there. No big thing, but it's not the most beautiful caul ever.
It makes a mess, but the glue is water-soluble, so it cleans up easily.
I did tape around the pickguard too, to avoid getting too much glue everywhere. I wiped up as much as I could with a damp rag.