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| Terrifying top http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10101&t=49664 |
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| Author: | Bri [ Sat Aug 26, 2017 11:47 pm ] |
| Post subject: | Terrifying top |
Nope, not a spelling error. While scraping and sanding this appeared. Yep, sanded through the b/w/b, the wenge was also compromised. I decided to to replace a portion of the rosette in place. It was that or replace the top on a bound box so there was nothing to lose. |
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| Author: | Colin North [ Sun Aug 27, 2017 6:28 am ] |
| Post subject: | Re: Terrifying top |
Nice save! Would never know. |
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| Author: | Clay S. [ Sun Aug 27, 2017 7:34 am ] |
| Post subject: | Re: Terrifying top |
Good Job! I think adding the BW purfle inside the pearl improved the look over the original. |
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| Author: | Pmaj7 [ Sun Aug 27, 2017 9:47 am ] |
| Post subject: | Re: Terrifying top |
Nice. I would be cracking a cold one after that! |
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| Author: | jfmckenna [ Sun Aug 27, 2017 10:14 am ] |
| Post subject: | Re: Terrifying top |
HEck yeah that is a nice job, how did you center it so well? |
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| Author: | sdsollod [ Sun Aug 27, 2017 5:11 pm ] |
| Post subject: | Re: Terrifying top |
Sometimes fixes end up coming out better then the original design (it has for me). I have also found that if I walk away, think about over night, a fix idea will come to me... Nice save Brian! Looks great! Be sure to post photos when you you're done. |
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| Author: | Haans [ Sun Aug 27, 2017 6:13 pm ] |
| Post subject: | Re: Terrifying top |
Nice recovery! I've done a lot of them when I decided I wanted to change the look or style of the rosette, change to abalone, etc. Usually these kinds of problems arise when one of two things happen. One is careless oversanding and too shallow of a rosette depth. By sanding the inside of the top fully, figuring your final thickness at the rosette and setting it to 1/2 the thickness (depth) of the final top plus excess on the outside of the top that you intend to sand down, you can be on your way to a successful final thickness near the 1/2 mark. The other reason these things happen is because the inlays do not fully seat at the bottom of the slot. Photo two seems to show some of that which may be the reason it all happened in the first place. Can't stress enough that the inlays must be clamped down solid to the bottom of the slot. That slot also must be clean on the bottom, nice and flat. A couple of doughnut shaped hardwood cauls and lots of C-clamps will take care of that problem. Many rosettes are not a one shot clamping solution. Remember that rosettes are not just a pretty look on the top. They're prime import is to stiffen the top around the soundhole. Steve is right about everything he said, except I have found over the years that you only get one chance to fix a mistake most all the time. After that you just end up with a bigger mess. |
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| Author: | Bri [ Sun Aug 27, 2017 6:18 pm ] |
| Post subject: | Re: Terrifying top |
I knew the rosette was marginal when I finished it, but due to inherent laziness(and a the need to move forward) I attached it anyway. Thought I could save it but sanding gots to be done. Thanks Colin, Clay, you are right on for the extra purfling line, Pat it was a margie, Jf, I just snuck up on milling the temporary center until it fit snug. Steve, pics coming soon for this. I am pretty pleased with the results so far, but until it gets strings its only a woodworking project. Thanks all for the kind words. B |
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| Author: | Bri [ Sun Aug 27, 2017 6:24 pm ] |
| Post subject: | Re: Terrifying top |
This. I knew when I pulled the clamps off this was the case. Likely didn't clean the channel well. Haans wrote: The other reason these things happen is because the inlays do not fully seat at the bottom of the slot. Hey, how else ya gonna learn. B |
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| Author: | TimAllen [ Mon Aug 28, 2017 12:05 am ] |
| Post subject: | Re: Terrifying top |
Hans wrote: "I have found over the years that you only get one chance to fix a mistake most all the time. After that you just end up with a bigger mess." Boy howdy. If the first fix fails, you (or at least, I) have to just move forward and make the best of it, hopefully having determined the cause so it doesn't happen again. Thank you Hans for the benefit of your experience re typical causes for rosette sand-throughs and ways to prevent them. |
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| Author: | Haans [ Mon Aug 28, 2017 6:42 am ] |
| Post subject: | Re: Terrifying top |
Bri wrote: This. I knew when I pulled the clamps off this was the case. Likely didn't clean the channel well. Haans wrote: The other reason these things happen is because the inlays do not fully seat at the bottom of the slot. Hey, how else ya gonna learn. B My post was supposed to help people learn. You add information after the OP. I am not a mind reader. Like I said, "Nice recovery." Good luck. |
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| Author: | SteveSmith [ Mon Aug 28, 2017 6:53 am ] |
| Post subject: | Re: Terrifying top |
Nice fix. I've done several that way. Got another one in the shop that needs a complete rosette replacement that I'll get to shortly. |
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