| Official Luthiers Forum! http://www.luthiersforum.com/forum/ |
|
| x-braced back http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=25029 |
Page 1 of 1 |
| Author: | J Hewitt [ Mon Dec 14, 2009 7:48 am ] |
| Post subject: | x-braced back |
Hi, This is my first time of using this bracing for the back and I need to know about how high to go with the bracing at the lap joint..... it is an OM size. Right now there about a 1/2 - 9/16 high. Thank you, Jeff |
|
| Author: | Michael Dale Payne [ Mon Dec 14, 2009 9:34 am ] |
| Post subject: | Re: x-braced back |
On my OLF-OM plans and in my builds I use 3/4" tall by 1/4" thick back X bracing. I thin to parabolic cross sectional profile and silhouette |
|
| Author: | J Hewitt [ Mon Dec 14, 2009 10:15 am ] |
| Post subject: | Re: x-braced back |
Well...ain't that my luck!! I ask the question after there shaved down to the height they are now!! I wouldn't have thought they would need to be at that height> Thanks for your help.... Jeff |
|
| Author: | Michael Dale Payne [ Mon Dec 14, 2009 10:34 am ] |
| Post subject: | Re: x-braced back |
1/2" will probably fine. |
|
| Author: | Ken Franklin [ Tue Dec 15, 2009 2:27 am ] |
| Post subject: | Re: x-braced back |
I'm usually 9/16-5/8 in the lower bout, including the cap, and 1/2 in the upper bout. |
|
| Author: | Gregg C [ Tue Dec 15, 2009 7:50 am ] |
| Post subject: | Re: x-braced back |
Has anyone use scalloped bracing identical to the top on the back ?? As if it was another sound board ?? Any thoughts ?? Gregg |
|
| Author: | TonyKarol [ Tue Dec 15, 2009 8:26 am ] |
| Post subject: | Re: x-braced back |
Looking good jeff .. but I dont see the point is adding another X up top thats that closed, and so close to the rim edge (at the cutaway for sure) - that area of the top is now very stiff, which will inhibit the upper back movement and detract from bass response IMO. I would think you could eliminate half the X, and just keep the other angled cross bar (the one that goes away from the cutaway) - I do that all the time on florentines ... my 2 cents .... |
|
| Author: | Ken Franklin [ Tue Dec 15, 2009 9:29 am ] |
| Post subject: | Re: x-braced back |
I agree with Tony that with a cutaway the upper x is not as necessary, but I use it anyway. My theory is that it helps keep the back from flattening which may be a contributing factor to the need for neck resets. I haven't heard a lesser bass response in my instruments compared to ones I've ladder braced. |
|
| Page 1 of 1 | All times are UTC - 5 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|