List, A tech friend and myself are rebuilding two identical Bechstein A's. We've made (glued) up the soundboard panels and are ready to thichness and sand them along with prepare (precrown) the ribs. We are on the search for an appropriate method including jigs to do this job. We have plans for one method, but it may not be the best way to do the job. My questions are... What system or jig arrangement do the seasoned soundboard folk use for shaping (precrowning) the ribs? Also for this model piano are there improvements to be made in altering (reducing) the soundboard thickness? We are going to increase the rib height from the original minimal 19mm to somewhere near 23 to 24mm, but will be happy to incorporate advice and suggestions from those of you familiar with this model piano and who have successfully altered / improved some of the original soundboard / rib specs. Any input here would be very welcome. Thanks, Graeme Harvey New Plymouth New Zealand.
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