Are y'all suggesting most arched-back guitars/ukuleles are flat enough on the outer edge to not need angled kerfing?
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| Kerfing on Arched-Back Guitars http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10101&t=51973 |
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| Author: | KawaiianPunch [ Sun May 26, 2019 9:20 am ] |
| Post subject: | Kerfing on Arched-Back Guitars |
Are kerfing angled on arch-back guitars? |
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| Author: | Barry Daniels [ Sun May 26, 2019 9:50 am ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
Yes. This is most easily achieved with a radius dish lined with sandpaper. |
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| Author: | Colin North [ Sun May 26, 2019 11:49 am ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
Are they? Sometimes at least not I believe. From this webpage - http://chandlerbryan.com/BuildArchtop1.html Quote: In one way at least, archtop construction is a little simpler than flattop: the edges of the top and back where they join the
sides must be completely flat. That is to say, the edges of the sides (rims) are parallel. |
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| Author: | Barry Daniels [ Sun May 26, 2019 12:07 pm ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
Colin, I thought he was talking about a normal acoustic guitar with a radiused back. Yes, an arch-TOP guitar is usually built with a flat connection between the rims and the plates (at least the ones I have built). Perhaps the OP can tell us which guitar he is asking about. |
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| Author: | Colin North [ Sun May 26, 2019 12:21 pm ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
That would be a good idea. |
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| Author: | KawaiianPunch [ Sun May 26, 2019 2:33 pm ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
Are y'all suggesting most arched-back guitars/ukuleles are flat enough on the outer edge to not need angled kerfing?
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| Author: | Barry Daniels [ Sun May 26, 2019 3:03 pm ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
Depends on how you build it. If you make the back with a full radius then you need angled kerfing. But, if you make a back by carving from a thick piece of wood (like a traditional arch top guitar), or you form a back like in your photo, which shows a complex curve and re-curve resulting in a flat area along the perimeter, then you would leave the kerfing flat. |
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| Author: | KawaiianPunch [ Sun May 26, 2019 3:34 pm ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
So, regardless of the style, the kerfing needs to be flush/glued with the back-board. |
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| Author: | Barry Daniels [ Sun May 26, 2019 6:37 pm ] |
| Post subject: | Re: Kerfing on Arched-Back Guitars |
Of course. You normally want joints to close up with little pressure before you glue them. Unless you have a specific reason to make a "spring joint" where you want some added tension. |
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