The panel rough trimmed, and cleaned up, a bit, but not leveled, the thickness at this stage is around 10 mm. Final thickness will vary from 5.5 to 7 mm, before final thicknessing the panel will sit in the hot room for two weeks and shrink down. The hot room is set at 26% RH.
As I will be gluing the sound-board together in this next step, it seems an appropriate place to stop and talk a little bit about glue. Many restorers and conservators talk very negatively, and vehemently so, about AR, or Aliphatic Resin, glues. One major complaint about this type of glue is that it creeps, and that joints under constant stress will eventually fail. In thirty years of cabinet making, over ninety modern sound-boards, and two new modern instruments, one weighing over 2000 lbs., I have yet to see a single joint fail as a result of creep, although I am well aware that there are others who do not share this experience. In every case where I have replaced a modern sound-board, the original board failed as the result of the use of animal glues. One other often cited problem is that joints made with AR glues are not invisible. Let me assure you, that properly constructed joints assembled with AR glue, are as invisible as they would be with any other adhesive. Having said