Tom OBrien wrote:In regards to comments about runout in the spruce, there really is no way to control that if you consider the limitations on the process mentioned above. Those who make piano soundboards (we make them in the shop where I work) pay NO attention to the way the grain pattern on one board matches the one next to it. Therefore, you have to be content with the fact that a top made from a piano soundboard is going to have grain patterns that shift drastically every 4" or so. Luck and necessity drive the process much more than aesthetic considerations. It is fortunate just to get a piece of wood large enough to make a J-185 soundboard, let alone one that might look good in the process.
Since I don't actually know anything about piano soundboards, I should have kept my mouth shut! I originally assumed that you remove the pieces of the sound board one at a time so you would end up with multiple pieces of wood which can then be cut into thin pieces, joined, and made into a guitar sound board. However, I think I see now that you are removing the entire sound board from the piano in one piece and then cutting it into guitar sized chunks which you then resaw into thin sound boards, is that right? If my second scenario is the more accurate one, than yes, you have zero control over how the individual boards were glued up originally. Nevertheless, if I were offered one of these to build with, I would do it for two reasons:
1) recycling old, valuable spruce is good for everyone
2) the sound board has a killer history.
The vendor I buy all of my spruce from recovers blow down trees and literally carries the wood out of the forest on his back so as to have as little impact on the environment as possible. He also salvages trees that were cut down 60 or more years ago and were used to make logging bridges so companies could bring in equipment to cut and haul out felled trees. Those particular "bridge stringer" spruce trees are no better in quality than a tree blown down in a storm, but they have a cool back story that people seem to react to. A piano sound board is every bit as cool, if not cooler, than having your guitar built out of an old logging bridge stringer.
Also, I apologize if my run out comment was taken as offensive. That was never my intention. You have built a great looking guitar and my dopey comment was not meant to detract from that fact.