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| Gummy spots on nitro http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10101&t=53966 |
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| Author: | Pmaj7 [ Fri Feb 19, 2021 2:08 pm ] |
| Post subject: | Gummy spots on nitro |
I'm doing a crack repair on a '90s kamaka which I think is nitro. Using CA like normal, but when I go to scrape it I noticed some of the areas around and under where I put the ca are gummy. Did not notice any gumminess before I started. I did use Napa and a toothbrush to clean out the area as I was initially super gluing slivers in the crack area. Could that have caused the gumminess? What to do? Gummyness in Seattle |
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| Author: | bluescreek [ Fri Feb 19, 2021 3:43 pm ] |
| Post subject: | Re: Gummy spots on nitro |
CA will interact with NITRO did you use accelerator? let it set a day or so it may reharden the more I do this the less I use CA |
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| Author: | Pmaj7 [ Fri Feb 19, 2021 3:46 pm ] |
| Post subject: | Re: Gummy spots on nitro |
Yes, I used accelerator. Gluboost accelerator and CA Pat |
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| Author: | Chris Pile [ Fri Feb 19, 2021 4:35 pm ] |
| Post subject: | Re: Gummy spots on nitro |
How old is your CA? Over time it absorbs water and gets thick. That's why I buy new bottles every year, and toss the old ones. Fresh glue is a MUST, no matter what type. |
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| Author: | John Arnold [ Fri Feb 19, 2021 4:56 pm ] |
| Post subject: | Re: Gummy spots on nitro |
I just started using Gluboost accelerator. I do like the performance, but it can temporarily soften old nitrocellulose lacquer. In my experience, the lacquer will harden back up after a few hours. My old standby accelerator is Insta Set in a squirt bottle. It does not soften lacquer, but it will cause some super glues to blush (turn white or milky). Sent from my SM-G950U1 using Tapatalk |
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| Author: | Pmaj7 [ Fri Feb 19, 2021 11:21 pm ] |
| Post subject: | Re: Gummy spots on nitro |
Seems like it has hardened up. Okay no more accelerator! Thanks guys! Pat |
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| Author: | Pmaj7 [ Sat Feb 20, 2021 2:33 pm ] |
| Post subject: | Re: Gummy spots on nitro |
So I scraped off most of the gummy and let the area harden. Then I put some new Gluboost fill n finish on and let it dry overnight. Most of it is hard but the area that was gummy, the ca did not harden! Hmm.... Pat |
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