Issues now? Or issues in 35 years?
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| Celluloid pickguards http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10101&t=55114 |
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| Author: | mikeyb2 [ Fri Jul 01, 2022 3:20 pm ] |
| Post subject: | Celluloid pickguards |
Hi everyone, I'm nearing completion of my 2 L-00 builds and I'm wondering what your thoughts are about celluloid pickguards, especially over a nitro finish, using 3M 467 adhesive sheet to attach. Should that be ok, or will there be issues? thanks Mike. |
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| Author: | joshnothing [ Fri Jul 01, 2022 4:17 pm ] |
| Post subject: | Re: Celluloid pickguards |
Issues now? Or issues in 35 years?
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| Author: | mikeyb2 [ Fri Jul 01, 2022 4:32 pm ] |
| Post subject: | Re: Celluloid pickguards |
joshnothing wrote: Issues now? Or issues in 35 years? I don't suppose I should worry at my age(72)  , but I've read about self combustion etc, although my main concern was whether the nitro-cellulose finish would be somehow affected by a celluloid guard, even with a layer of adhesive in between. Thanks.
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| Author: | joshnothing [ Fri Jul 01, 2022 4:50 pm ] |
| Post subject: | Re: Celluloid pickguards |
I don’t think there’s any issue of short term compatibility. |
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| Author: | ballbanjos [ Fri Jul 01, 2022 8:23 pm ] |
| Post subject: | Re: Celluloid pickguards |
joshnothing wrote: Issues now? Or issues in 35 years? For me, it's like 50 year roofs vs 30 year roofs. It would only be a matter of posthumous pride for me. It's extremely unlikely I'll see either! Dave |
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| Author: | Woodie G [ Sat Jul 02, 2022 10:53 am ] |
| Post subject: | Re: Celluloid pickguards |
Celluloid guards attached with acrylic transfer adhesives have been in use since the early 1980's, so 40 years would seem to be a suitable long-term trial. While I would not suggest a lacquer-over finish with a cellulose nitrate guard, I have not seen or heard of any issues beyond one custom-built instrument from a non-US builder that had such poor adhesion of the finish that guard removal in prep to install a nicer tortoise versus the black vinyl, square-edged builder-installed guard saw some refinish required. Given the design, materials, and workmanship issues we had seen on that builder's previous instruments, not an adhesive compatibility issue. We used/I continue to use 3M 468, which has demonstrated compatibility with cellulose nitrate and acetate guards, as well as functions as a barrier film to prevent migration of plasticizers between finish and vinyl guards. |
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