> Thanks for the sketch Ron... Welcome. > Regarding the accuracy over time...its easy enough to check down the road. > Just put the gauge and a sample piece in the box or whatever, oven dry the > sample and check against the gauge...no? Yes. > Terry, I have a question for you. I like the simplicity of your approach, and > will use it or a version of it on a keyboard blank I'll be making in a couple > months. > > You have a great mc/width reference before ribbing, but don't you lose your > reference once the board is ribbed? There are at least 2 times after ribbing > when I'll > want to know when that board is at or near the target mc; just before I glue it > in the case, > and then again when I take downbearing measurements...it seems like you no > longer > have a reference dimension at these points. > - > Jim Ialeggio One of these concerns is why I like my simple minded little gage. While there isn't any crown related reason to have the soundboard assembly at ribbing MC when it's glued in, I find that the thing squirms around enough with MC shifts that I can get better bridge alignment if the thing is at the same MC when it's glued in as it was when the bridges were located and glued on, since I depend on locator pins for both the plate and soundboard placement. Come time to set bearing, the crown isn't a whole lot different in an RC&S board in high humidity than it was at ribbing, so that's not too big a deal. Always looking for better ways though. Ron N
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