| Official Luthiers Forum! http://www.luthiersforum.com/forum/ |
|
| Tie-block problem http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=30483 |
Page 1 of 1 |
| Author: | JoeUlman [ Mon Dec 27, 2010 2:13 am ] |
| Post subject: | Tie-block problem |
After stringing up for the first time and playing a bit I noticed that the inboard bone strip has pulled up along its length from string force. Attachment: IMG_1688 copy.jpg Attachment: IMG_1687 copy.jpg The tie-block inlay had been glued with LMI white. Any suggestions on the best fix? Thanks. Joe |
|
| Author: | Ti-Roux [ Mon Dec 27, 2010 3:18 am ] |
| Post subject: | Re: Tie-block problem |
I would use HHG for this job, but LMI white should work too. It seems maybe more like a design problem. Maybe your bone inlays are too deep. The inlays are there to protect the corners. Are the holes drilled through bone too? The problem really seems to be that the strings are pulling up the bone. Hope that helps! Francis |
|
| Author: | JoeUlman [ Mon Dec 27, 2010 3:32 am ] |
| Post subject: | Re: Tie-block problem |
Thanks Francis. On inspection, it appears that pretty much no glue adhered to the surface of the bone while it adhered well to the rosewood. Here’s another picture that answers your question about the position of the holes. Attachment: IMG_1690 copy.jpg Joe |
|
| Author: | Ti-Roux [ Mon Dec 27, 2010 4:31 am ] |
| Post subject: | Re: Tie-block problem |
What I see on this photo confirm my theory. I'd suggest you reglue it well, and it should stay in place, but I'd also suggest you, for the next time, to review the design. The string should push the bone inlay instead of pulling on it, like it's the case here. Just make sure the holes are below the bone. ![[:Y:]](./images/smilies/smiley20.gif "Thumbs Up") Francis |
|
| Author: | JoeUlman [ Mon Dec 27, 2010 5:00 am ] |
| Post subject: | Re: Tie-block problem |
Ok, I'll re-fit and re-glue, and let you know how it turns out. Thanks for the help. Joe |
|
| Author: | Ti-Roux [ Mon Dec 27, 2010 7:16 am ] |
| Post subject: | Re: Tie-block problem |
JoeUlman wrote: Ok, I'll re-fit and re-glue, and let you know how it turns out. Thanks for the help. Joe If you have some, try hot hide glue, or fish glue. |
|
| Author: | jfmckenna [ Mon Dec 27, 2010 12:01 pm ] |
| Post subject: | Re: Tie-block problem |
I use CA for that. As was mentioned the problem is that your strings are contacting the bone from the underside. The holes should be through the wood only and not make contact with the inlay. If it happens again you may need to remove the bridge and fill the holes and redrill. |
|
| Author: | douglas ingram [ Mon Dec 27, 2010 2:34 pm ] |
| Post subject: | Re: Tie-block problem |
The big problem is the holes. The strings are exerting upward pressure. The only pressure should be down and into the corner. Theoretically, the bone should be able to stay in place with no glue whatsoever. Once you re-glue it, make sure that the holes are re-drilled properly. |
|
| Author: | David LaPlante [ Mon Dec 27, 2010 3:27 pm ] |
| Post subject: | Re: Tie-block problem |
Try this before you redrill the holes: Once the strip is reglued, get the Dremel bit that has the tip shaped like a small cone and relieve the holes on the front side of the bridge by inserting the bit and opening them up so that the string does not push on the front edge. If you can extend the cone shaped recess as far back as the wood, the string pressure will bear there instead of the bone. Attachment: dremel.jpg
|
|
| Author: | JoeUlman [ Tue Dec 28, 2010 1:10 am ] |
| Post subject: | Re: Tie-block problem |
Ok, here’s an update. I cleaned off the old glue and re-glued using CA. I didn’t have hide or fish glue. Also relieved the upper edge of the string hole as suggested. Restrung and it appears to be holding. Attachment: IMG_1693 copy.jpg Thanks everyone for the help. Also, if anyone is interested, here’s an audio clip I made right after the guitar was initially strung up, before the tie-block fix. http://home.comcast.net/~jlulm/hauser%2 ... clip_1.MP3 I’ll try to record some better clips and post with some pictures in a week or so. Joe |
|
| Author: | Robbie_McD [ Tue Dec 28, 2010 1:48 am ] |
| Post subject: | Re: Tie-block problem |
The fix looks good Joe. I had a listen to the clip - nice playing! The guitar sounds like it has nice balance and a good bass "growl" Excellent work! It will open up even more over time. Rob |
|
| Author: | jfmckenna [ Tue Dec 28, 2010 11:06 am ] |
| Post subject: | Re: Tie-block problem |
Sounds great, you can hear the newness in it but she will open up nicely in time. |
|
| Author: | WaddyThomson [ Tue Dec 28, 2010 11:16 am ] |
| Post subject: | Re: Tie-block problem |
Looks good - Sounds good! What more can you ask? I really like the arrangement of "Scarborough Fair". Is it out of a book? If so, which one? |
|
| Author: | JoeUlman [ Tue Dec 28, 2010 12:52 pm ] |
| Post subject: | Re: Tie-block problem |
Thanks for the compliments guys. Waddy, it’s David Brandon’s arrangement in the Christopher Parkening Method volume 2. Joe |
|
| Author: | WaddyThomson [ Tue Dec 28, 2010 12:54 pm ] |
| Post subject: | Re: Tie-block problem |
Thanks, Joe! |
|
| Author: | arie [ Tue Dec 28, 2010 3:30 pm ] |
| Post subject: | Re: Tie-block problem |
design wise you could take a look at going double hole on your next one. that design eliminates the upward pull of the tied up section of string. |
|
| Author: | WaddyThomson [ Tue Dec 28, 2010 9:22 pm ] |
| Post subject: | Re: Tie-block problem |
18 hole leaves a nice clean tie block, with no issues. Attachment: P1040280 (Large).JPG
|
|
| Author: | Colin S [ Wed Dec 29, 2010 4:07 am ] |
| Post subject: | Re: Tie-block problem |
I'm with Waddy, 18 hole is the way to go. I put a bone plate on the back as hole reinforcment, this stops any tendency for the strings to cut into the back of the bridge. Colin 
|
|
| Page 1 of 1 | All times are UTC - 5 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|