I re-glued the structure, removed the brass, cleaned up the remaining animal glue, and eliminated the residue of superglue and neoprene adhesive. Then came the cutting of the new pieces. brass and tortoiseshell to fill in the gaps.
So, as usual, I take an impression of the missing piece.
I then glue this paper onto a brass plate, which is itself glued with fish glue onto a 4 mm plywood. This makes the plate easier to cut.
Retrieving the brass piece is simple: just immerse it in boiling water. The fish glue will melt, and the brass will detach easily.
Next, I check and adjust each piece perfectly in its place.
Then comes the gluing stage. On this sign, I used two gluing methods for the curved parts. For the sides of the sign, I used sandbags with fish glue.
For the lamp base, I used vacuum sealing. I first placed a bag of sand inside to prevent the pressure from causing the structure to burst. I then placed the lamp base, glued with fish glue, in an airtight bag, where I created a vacuum (approximately -0.8 bar).
I slightly warmed the veneer (without reaching the melting point of the old glues) in order to optimize the bonding.
