#1
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What finish material does Eastman's "Open Pore" finish use?
I was reading the spec sheet on a guitar made by the Chinese violin, mandolin and guitar company Eastman, and when I got to the line about its finish it read: "Open Pore." It's a satin finish on the guitar, I know that, having played one. But is it polyester based? Do any of you know, or know of someone I can ask?
Wade Hampton Miller |
#2
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Eatman CS
You could email their contact address. Eastman CS is usually very responsive.
https://www.eastmanguitars.com/contact |
#3
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Thanks, Tom, I just did.
Wade |
#4
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Let us know. I have it on my electric Eastman. I always thought it was a French polish-like finish.
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Guild CO-2 Guild JF30-12 Guild D55 Goodall Grand Concert Cutaway Walnut/Italian Spruce Santa Cruz Brazilian VJ Taylor 8 String Baritone Blueberry - Grand Concert Magnum Opus J450 Eastman AJ815 Parker PA-24 Babicz Jumbo Identity Walden G730 Silvercreek T170 Charvell 150 SC Takimine G406s |
#5
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May just be a matter of using no grain filler.
__________________
"You start off playing guitars to get girls & end up talking with middle-aged men about your fingernails" - Ed Gerhard |
#6
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That's the definition of an "open-pore" finish, that the "grain" (pores) of the wood were not filled as part of the finishing process.
Note that only "open-pored" woods "need" filling. "Closed-pore" woods, such as spruce, cedar, maple, poplar, birch... have pores small enough to not require filling in order to achieve a smooth finished surface. |
#7
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Looks like creosote to me ...but nice!
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Silly Moustache, Just an old Limey acoustic guitarist, Dobrolist, mandolier and singer. I'm here to try to help and advise and I offer one to one lessons/meetings/mentoring via Zoom! |
#8
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Quote:
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"You start off playing guitars to get girls & end up talking with middle-aged men about your fingernails" - Ed Gerhard |
#9
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Wade, please report back once you get an answer. I'll be interested to know what they say. Thanks.
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#10
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Will do.
whm |
#11
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Quote:
Quote:
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#12
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The varnish finish on some Eastman electric and acoustic models (designated with the "v" in the model number) is different than the open pore finishes that they're using in some of their more affordable acoustic guitar models. I'm not aware of any open pore finishes in their electric guitar line.
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"It's only castles burning." - Neil Young |
#13
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Okay, I just spoke with Dan in Eastman’s Pomona, California office. According to the gentleman who answered their telephone Dan is their designated “guitar guy,” and the person to ask when any questions about their guitars arise.
Dan told me that their “Open Pore” finish is a satin nitrocellulose lacquer finish. I have owned some instruments finished in satin nitrocellulose, mostly mountain dulcimers, and know that it’s nice and light and doesn’t inhibit the sound in any way. However, it’s also easily rubbed through or at least accidentally burnished into a semi-gloss in spots where it receives physical contact from the player. When Dan told me that the “Open Pore” finish was nitrocellulose lacquer I was surprised, but then realized that I shouldn’t be, since Eastman already uses a high gloss nitro finish on other guitars built in the same factory. Eastman’s “Open Pore” finish guitars would go through the same finish room and be sprayed with the same nitrocellulose lacquer with the same equipment, the only difference being that they probably only receive a base coat instead of the multiple coats necessary for a high gloss finish. Anyway, since these guitars are finished in nitrocellulose, the same rules apply: avoid vinyl entirely, since when vinyl comes into direct contact with nitro there’s a nasty chemical reaction. Guitar polish should be avoided, as well, since there isn’t enough finish material on there to shine up, and if shined up there’s a very real danger of completely blowing through the finish and reaching the bare wood underneath. Wade Hampton Miller |
#14
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Thanks
Thanks Wade for the follow up and post.
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#15
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Thanks Wade for the info
very cool to know! I'll have to stop wearing my vinyl t-shirts |