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| Do you shape bracing before glueing? http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=22200 |
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| Author: | Dave_E [ Thu Apr 30, 2009 8:51 pm ] |
| Post subject: | Do you shape bracing before glueing? |
Hi All, Every guitar I've ever built was built a certain way, same steps, in order etc. etc.. I was just thinking today, why couldn't I shape my (standard bullet nosed) bracing prior to glueing? If I bought a brace kit from somebody they're already done right? Do you or have you ever done this? Pros? Cons? Dave |
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| Author: | old man [ Thu Apr 30, 2009 9:20 pm ] |
| Post subject: | Re: Do you shape bracing before glueing? |
I cut mine to length, radius the backs, and cut the scallops. Glue 'em on then finish shaping with my chisel and sandpaper. The only problem I see would be in clamping if the tops aren't flat. If you can adequately clamp them, I don't see why you couldn't use them. Ron |
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| Author: | peterm [ Thu Apr 30, 2009 9:33 pm ] |
| Post subject: | Re: Do you shape bracing before glueing? |
Rough shape first and then final shaping as I voice the top. |
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| Author: | Mark Groza [ Fri May 01, 2009 7:46 am ] |
| Post subject: | Re: Do you shape bracing before glueing? |
I use a go-bar deck so mine are square when glued.A carved brace would be harder to get a good grip on for glueing i would think.And impossible to voice as well. |
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| Author: | Bill Hodge [ Fri May 01, 2009 1:54 pm ] |
| Post subject: | Re: Do you shape bracing before glueing? |
I pre-shape the bracing to rough dimensions and use either go-bar or vacuum clamping with no problems. My preferred method, vacuum. It's quicker and easier. |
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| Author: | Alan Carruth [ Fri May 01, 2009 2:49 pm ] |
| Post subject: | Re: Do you shape bracing before glueing? |
I think of voicing, however you do it, as getting the 'right' balance of bracing and top. Since you probably don'thave exact readings on the stiffness and mass distribution of the top, or the stiffness of the braces, you can't really know exactly what the brace height should be until it's all together. I glue them on tall, and rectangular along the tops, rough trim the braces a bit on the high side, and tune using Chladni patterns. Sometimes I take off very little brace wood, and sometimes a lot. 'A lot' seldom amounts to as much as ten grams, from rough trim to finish, BTW. |
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