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| Superglue Yellowing http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=47927 |
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| Author: | Fasterthanlight [ Wed Jun 22, 2016 12:38 pm ] |
| Post subject: | Superglue Yellowing |
Hi Folks. After gluing in a rosette a couple of weeks back its seems that some areas a round the inlays have yellowed a bit, i presume from the superglue i used. I used cheap glue, i guess this is the main problem, but does anyone know any fixes for this other than the obvious of using better quality glue? G. |
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| Author: | bcombs510 [ Wed Jun 22, 2016 12:58 pm ] |
| Post subject: | Re: Superglue Yellowing |
Is it the rosette or the soundboard that is discolored? Did you seal the rosette channel before gluing it in? Sent from my iPhone using Tapatalk |
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| Author: | StevenWheeler [ Wed Jun 22, 2016 1:00 pm ] |
| Post subject: | Re: Superglue Yellowing |
Gary, Spruce must be sealed with shellac prior to the application of CA adhesives. I've also seen the same yellow staining on soft maple and similar problems with cedar so I seal all light colored woods before applying super glue. Steve |
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| Author: | meddlingfool [ Wed Jun 22, 2016 1:33 pm ] |
| Post subject: | Re: Superglue Yellowing |
I think they've got it. Sounds like superglue wicked into the end grain of the unsealed rosette channel. Get yourself a bag of dewaxed shellac flake and make shellac as required... |
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| Author: | Fasterthanlight [ Wed Jun 22, 2016 2:32 pm ] |
| Post subject: | Re: Superglue Yellowing |
Well thanks for the replies guys.. and duly noted regarding the shellac. |
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| Author: | Clay S. [ Wed Jun 22, 2016 3:42 pm ] |
| Post subject: | Re: Superglue Yellowing |
I used some cheap Chinese super glue from Walmart that yellowed after a few weeks. ![[headinwall]](./images/smilies/headbangwalluf8.gif "Mad") It didn't work out to be a good way to cut costs. The glue penetrated deep into the fibers of the wood and could not be sanded out. I wound up doing a sunburst finish to hide the stains.You might be able tostain the top a matching yellow and do a tobacco sunburst. |
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| Author: | bluescreek [ Wed Jun 22, 2016 6:17 pm ] |
| Post subject: | Re: Superglue Yellowing |
I do not use CA on spruce Duco for all my rosettes. The first few guitars I used CA all yellowed . |
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| Author: | wbergman [ Wed Jun 22, 2016 6:26 pm ] |
| Post subject: | Re: Superglue Yellowing |
I can actually detect discoloration on a CA seam in BRW. |
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| Author: | kencierp [ Wed Jun 22, 2016 9:59 pm ] |
| Post subject: | Re: Superglue Yellowing |
Like the Taylor factory we use clear nitro lacquer to seal the rosette and binding channels if CA is going to be used for assembly. |
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