As the linings we have here are made with exotic wood, we decided to make lining blocks from some willow pieces. We plane the pieces to give an angle and cut individual linings with the band saw.
Before to glue the lining blocks, we clean them on a sanding block. We use hide glue. The idea is that hide glue will attract the two pieces of wood during the drying process, we don't need so to put some pressure while gluing, provided that the lining block is square and leave no gap with the top or the ribs. We just put a certain amount of glue on the ribs, the soundboard and the lining blocks and pose them in their place.
For the lining blocks we glue in the waste area, we shape them with a slight curve using a round rasp to make a good fit.
When all the lining blocks are glued, we make some high "peones" we will glue on the transversal braces to support them. We carve a piece of willow with a chisel and a file.
Those peones are glued with the rings we mentionned before.
Bonus : Lorenzo use some Tripoli powder mixed with oil to nourish and polish the fingerboard.