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Dirty-South Blues Harp forum: wail on! >
Recycling old reedplates and Laser tuning.
Recycling old reedplates and Laser tuning.
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tookatooka
1917 posts
Dec 07, 2010
3:18 PM
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Recycling Reedplates.
If, like me you replace reedplates instead of trying to replace the actual reed you may have some old reedplates safely stored away because they may "come in handy".
I was thinking about doing some tuning and wondered whether it would be a good idea to have a pair of reedplates where I have blanked off the slots for the following reason.
When I want to adjust the blow reeds I could adjust the blow reeds and temporarily re-assemble the harp just by holdin it all together with my fingers using the blanked off draw reed plate. This means I wouldn't be touching the draw reeds and risk damaging them. Vice-versa for the other reedplate.
I wonder what you think of that? The only thing I'm concerned with is that the airtightness may be such that I get a false reading. Any thoughts on that please?
Laser Tuning.
Just a shot in the dark here but I often wondered how Suzuki laser tune their harps.
I know they don't laser etch the reeds to tune them due to seeing file marks.
Anyway I was thinking that if you direct a laser beam at a reed so that it reflects onto a piece of white card and then played a note through a keyboard etc at quite a decent volume, the reed would resonate in sympathy with the note being played when they were in tune with each other and the laser beam spot on the white card would deform accordingly.
You could then tune the reed accordingly. The further away the white card is from the reed the more accurate it could be because the laser pattern would be bigger.
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Last Edited by on Dec 07, 2010 3:20 PM
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nacoran
3369 posts
Dec 07, 2010
3:55 PM
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I'm not sure on either count, but the spare reed plate idea sounds good. If you had a lot and were setting up lots of harps it might even be useful to develop a 'gold standard' tuned plate for each key, since setting up for OB's involves setting both reeds.
For instance, if you had a gold standard bottom plate you could put it on the harp with the top plate you are trying to set up. When you get the top plate set and the OB's are working then you could take the gold standard bottom reed plate off and put it someplace safe. Now, theoretically your top reed plate is set up the way you need and you can tune the bottom reed plate! (Just a theory.)
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Nate
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