overblow.com
 
Corner Rounding

In corner rounding the tip corners of the reed are rounded off. This, like tip scooping, is said to produce a more laminar flow around the reedtip, thus causing the reed to respond quicker making it easier to gap for overblow playing.

 

Apparently, corner rounding is something different than that which I described here.
In a workshop at the World Harmonica Festival Rick Epping showed a technique where all the exposed edges on the reed are rounded off. So not the corners at the tip are rounded, but the corners of the edges along the side of the reed are rounded. Apparently this makes it easier for the reed to swing back trough the plate, thus causing it to react better to the player.


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User Contributed Notes
 
08-03-2012 00:33
Tinus
@Miguel: no since people are making combs of metal and plastics we have no more need for wooden combs
07-03-2012 21:14
Miguel
hola, excelente pagina, muy bien explicado.
sobre temas de peine: preparados de peine de de madera, micro pore, impermeabilizcion de la madera,etc. van a haber tutoriales?

Hello, excellent site, very well explained.
Comb issues: wooden comb preparations, micro pore, impermeabilizcion of wood, etc. will have tutorials?
26-11-2011 21:34
flakito
thank you so much
26-11-2011 21:31
Tinus
@flakito: Yes I do that to all the reeds. All 20 of them.
26-11-2011 21:26
flakito
Oh I understand but, do you still do all that you mention to all the reeds? for example waxing the 10 hole blow reed, or waxing is just for the draw reeds? sorry it's just that i'm realy confused by that, thank you
26-11-2011 21:11
Tinus
@flakito: personally I don't do this anymore. Too much work and not enough effect. I just emboss, arc, gap, wax an tip scoop.
26-11-2011 21:07
flakito
Hello Tinus,
Do you apply the corner rounding technique to all the reeds (1 to 10), in both blow and draw reeds? thanks
05-12-2007 23:18
Tinus
I think that embossing also rounds the edge when the edge is pushed inward. chamfering would probably have a similar effect as the corner rounding but it also widens the slot and that is a negative aspect. The oly way to find out is to experiment I guess.
05-12-2007 13:56
howlinghound
if rounding of the edges of a reed improves performance,would rounding (or chamfering)the edge of the reed slot do the same thing?(i guess this would somewhat compromise the slot embossing effect).Also if rounding the edge of the reed works(some sort of laminar flow improvement i guess)how does embossing work as it essentially puts a burr on the edge of the reed slot,thus upsetting smooth airflow.
15-09-2007 13:15
Tinus
Ah that's the question. No I dont think the tip is rounded, I used to think that but have since learned that it is in fact the long edges of the reed that are rounded on the exposed side of the reed. This is said to make it easier for the reed to move through the plate.
13-09-2007 23:14
Ludo

>utilizaba un traductor


one of internet's biggest flaws ;-)
so the question is:
whether the reed is rounded at the ends, and if there's a picture of an example available

13-09-2007 23:05
Itoharp
Gracias Ludo ,disculpa , utilizaba un traductor, lo que quiero decir es si la lengueta(caña) es redondeada en los extremos y si puedes poner un ejemplo en foto....gracias por todo
10-09-2007 19:13
Tinus
:) Thanks Ludo
10-09-2007 18:57
Ludo
Hi Tinus
By "cane" Itoharp surely means reed, since he's trying to translate from Spanish (seen his youtube vid's with Spanish content)

Itoharp
Puedes poner la pregunta en Espanol - voy a ver si puedo acer traduccion
10-09-2007 18:01
Tinus
I'm not sure I understand the question.
10-09-2007 12:35
Itoharp
Hello Tinus, wanted to know if I clear becomes around the cane or it only is in the end, despite would be thankful to you if the example in a photo were seen thank you very much…
27-08-2007 11:24
Tinus
That might be because it should be spelled laminar:

laminar flow
Function: noun
: uninterrupted flow in a fluid near a solid boundary in which the direction of flow at every point remains constant (Merriam-Webster)
24-08-2007 01:51
rockin rich
could not find the word LAMINER that was used here either.... please let me know what you are refering to in the first paragraph... "more laminer flow around the reed tip" ... please help out here... thanks... rich
20-07-2007 22:52
Robert Smith
Learn a lot of your informatif site
regard's Robert
21-03-2007 00:04
Tinus
Yes it will change the pitch of the reed. But since the material is scraped from all along the reed the change won't be very big. Big enough to put the harmonica seriously out of tune though.
20-03-2007 23:23
Marcelo Escobar
Hello, just a quiestion, Corner rounding won´t change the pitch of the reed?
The redd has to be re-tuned?

regards, marcelo escobar
14-09-2006 19:41
Tinus
Apparently, corner rounding is something different than that which I described here.
In a workshop at the World Harmonica Festival Rick Epping showed a technique where all the exposed edges on the reed are rounded off. So not the corners at the tip are rounded, but the corners of the edges along the side of the reed are rounded. Apparently this makes it easier for the reed to swing back trough the plate, thus causing it to react better to the player.
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