Thank you for your kind answers.


It is  very useful for me to have access to your knowledge and  a real privilege to belong to this list.


Regards


Júlio Galvão

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De: Harpsichords and Related Topics <[log in to unmask]> em nome de Rob Brooke <[log in to unmask]>
Enviado: sexta-feira, 26 de agosto de 2016 13:07:55
Para: [log in to unmask]
Assunto: Re: measuring thickness of soundboard

The original post on this topic asked for a cheap way of measuring
soundboard thickness. I was in the same position in the 1970's - needing
to measure soundboard thickness but having only a limited budget. Here
is what I came up with. I bought a Sears, Roebuck dial gauge which was
able to be zeroed and was accurate to about a thousandth of an inch. I
made a support to hold the dial gauge which could be clamped to the
upper framework of my go-bar deck. I bought, for pennies, a small,
domed-front brass drawer pull which had a threaded screw attached to its
rear for screwing into the wood of the supposed drawer. This I screwed
into the end of a piece of hardwood which I could clamp to the lower
framework of the go-bar deck.

The drawer pull, lets call it the "anvil", I mounted, rounded surface
up, to be exactly level with the working surface of the deck. The dial
gauge I mounted directly above and just touching the anvil so that with
nothing between the two, the gauge read zero. Now all I had to do was
place a soundboard-to-be on the lower deck, position it between anvil
and gauge at whatever board location whose thickness I wanted to measure
and read the thickness off the dial gauge.

This solution had a number of virtues. It was cheap as dirt. The process
of measuring the board supported the board flat, no waggling around and
therefore minimizing error. And it did the job to my satisfaction.

If I had had access to a deep-throated dial gauge caliper, I think I
would still have preferred my cobbled-up solution.

Good luck!

Rob

--
ROBERT BROOKE HARPSICHORDS
4214 18th Ave W
Bradenton, FL 34205

www.robertbrookeharpsichords.com<http://www.robertbrookeharpsichords.com>

941-746-6725

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