???Hey Big AL ? I have been successful thinning the edges of exsisting boards many times with a low angle Lie-Nielsen smoothing plane. A pricey tool at $250.00 but woth it's weight in knawed off sawdust. What ever?small hump or ridge that is left at the edge after planning is smoothed out/over with a small orbital sander. ?Guestimates on how thin one is going can be taken from around the nosebolts & areas near the rim under the plate can be drilled with toothpick size holes to get a depth guage thru. ? The Yamhas I've doone this way were tonally successful...to my ear ? Dale Thanks for the information Ron. When I worked at Steinway in the Regulating department, we had a nose plane. It was a good size plane with the blade up front with no frame in front. I haven't seen one since. It came in very handy preparing the key bed. Unfortunately it was company property. That would be a great tool for reduce the thickness of the panel perimeter around the edge. Tried a Google search but could find anything like it.? ? Al? ? ? --------------------------------------------------? ? > Al Guecia/AlliedPianoCraft wrote:? >? >> <snip> Rebuilding with an existing board, thinning the bass (or? >> channeling like Overs and Seiler) can be very worthwhile.? >>? >> Can you explain how you do that?? >>? >> Al? >? > Ron O has a photo on the opening page of his website > http://www.overspianos.com.au/ showing the soundboard with a channel > routed around the inner rim in the bass, thinning the panel perimeter. > This is a laminated panel, so tapering it wasn't a reasonable option. The > channel did the trick very nicely.? >? > Another approach, on a solid panel, is to plane, chisel, grind, gnaw, or > otherwise reduce the thickness of the panel perimeter around the edge of > the bass, tapering it back to full thickness in the middle. If you have > sufficient back scale length in the bass to make it worth the trouble > (since you already have the plate out), it should help bass response > noticeably. If you have the classic 40mm back scale on A-0, don't bother.? >? > Ron N? >? > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090126/79b17f8f/attachment.html>
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