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| Nitrocellulose-time betweem coats query http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10101&t=18404 |
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| Author: | vandenboom [ Sat Aug 16, 2008 1:03 am ] |
| Post subject: | Nitrocellulose-time betweem coats query |
I applied 4 heavy coats of nitro 2 weeks ago, and we have had very wet & humid condtions since, so I have not been able to get outside to do the second round of coats. I haven't been able to find any info on issues with delaying further coats. Is it going to matter if it doesn't happen for 3 weeks? I did cut back/level the day after the first coats. Frank |
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| Author: | TonyFrancis [ Sat Aug 16, 2008 2:53 am ] |
| Post subject: | Re: Nitrocellulose-time betweem coats query |
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| Author: | ChuckG [ Sat Aug 16, 2008 9:56 am ] |
| Post subject: | Re: Nitrocellulose-time betweem coats query |
I am using Behlen's Stringed Instrument Lacquer and the label instructions say to use it at full strength over one coat of sealer and to build up to 5 coats at least one hour apart sanding with 360-400 grit between coats. Does anyone know if there's anything so different about this product that allows this type of application? This is only the second guiitar I've used it on and the first one came out OK, but I'm inexperienced at this and maybe it only looks OK to me.  Chuck |
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| Author: | Barry Daniels [ Sat Aug 16, 2008 4:27 pm ] |
| Post subject: | Re: Nitrocellulose-time betweem coats query |
There's not that much difference there. Lacquer is so flexible that you can apply it with a wide variety of schedules and it will still come out just fine. Two coats a day with sanding in between, or five coats a day with no sanding until the next set. There really isn't that much difference. Try a few things and see what works best for you and your equipment. |
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| Author: | vandenboom [ Sat Aug 16, 2008 7:35 pm ] |
| Post subject: | Re: Nitrocellulose-time betweem coats query |
ToddStock wrote: I think wet coat gets confused with heavy coat - you want a wet coat to allow the lacquer to flow out and minimize sanding, as well as achieve a good burn into the previous coats. I think you are right - wet would have been a better choice of word. This is only my 4th guitar, and my second using spray equipment with nitro, so I am still feeling my way. On the previous guitar, I simply wasn't getting enough material on and had constant problems with sanding through, particularly on the edges (binding area), reflecting poor technique and uncertainty about how much was enough. Hence my question in a different post last week asking how much lacquer people use on average on a dreadnought. I just know now that I am getting better application, with no sand throughs after 4 coats, and only a couple of small runs which sanded out fine. So the coats are definitely heavier than last time, but 'wet' would have been a better choice. Thanks for your insight. Frank |
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