Day 6

Hollowing

 Since the front is in walnut, I'm going to refer at back thicknesses for my plate. Basically for the centre (under the bridge)  Rémi usually brings it around 4.5/5 mm going down gradually to 2.8 in the re-curve area and a bit less in the waist because it will always end up stiffer due to the geometry of the arch and outline. For a spruce front same idea but thicker in the middle more around 6mm. 

 To rough out the plate Rémi uses the drilling technique wich consists of putting a pin under the drill and setting a thickness, usually you leave 0.5 or 1mm extra. Then it's just a matter of drilling a lot of holes in order to have a "depth stop" when you are hollowing. 

 I setted the drill to 5.5mm and drilled about 100 holes across the whole plate 

 The setting :

Afterwards it was just a matter of gouging and planing until the holes are gone, and then you thickness the plate starting from the edges.


 The plate hollowed :