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1. Acrylic lacquer doesn't necessarily off-gas or dry and harden faster than any other lacquer. Acrylic lacquer or lacquers in general with more plasticizers can do the opposite relative or compared to nitro lacquer, with all else being equal.
Example: Stewmac's ColorTone lacquers, containing acrylic, including clear, and they are notorious for being slow to dry or harden. Mohawk "Finisher's Choice" and "Instrument" lacquers dry and harden to buff-ready much faster than ColorTone and similarly chemically formulated lacquers. Mohawk lacquer, correctly applied, is buff-ready inside of 48 hours. (if it isn't, there's a problem with one's process) Lacquers the likes of ColorTone can take weeks to sufficiently harden for safe or successful buffing.
Also, for that matter, there are lacquer products sold today that are blends of both.
It's an error to confuse or conflate the correlation of the relatively greater prevalence of acrylic lacquers containing additives to slow and reduce how those products yellow due to environmental exposure over time with simply acrylic lacquers can't yellow as much as nitro lacquer.
I believe it's abundantly clear that the OP's inquiry and this thread do not concern enamel and urethanes.
That includes consulting directly with Mohawk reps and chemists to formulate uniform finishing work flows in high-end wood furniture production across multiple production facilities
I have very little to say in response to that, except to point out that it's a litany of equivocation. My point was simple: They're not the same; and automatically / axiomatically treating them as if they are the same is a mistake (which I've seen the results-of on both car and guitar bodies; not by me, but from people who needed things correcting).
They can. However: In general, they don't. Cats can fly if you attach them to a hot-air balloon. Probably not best to rely on it.
You're invoking a specific example (one that contains both nitro and acrylic and lawd-knows what else), to prove a point about the difference between specific ingredients. And "buff-ready" may help with your production-flows, but buff-ready is not fully dry; you can usually stick a thumbnail in buff-ready, which has a bearing on the OP's original question. I'm familiar with Mohawk's instrument lacquer; their recommended dry time to rub-out is 72 hours, and it's not really dry/hard by then, certainly not enough to put acrylic lacquer over, which was the original point of difference. The other one, I'm not familiar with, but given that they caution about not putting more than 4 dry mils total on lest there be adhesion and cracking issues, I also question its relevance.
Yes. You've just invoked one. That has no bearing on whether there's always a chemical difference and frequently a functional / practical difference on using them, and whether bearing that in mind before treating them as the same is detrimental.
I didn't say they "can't"; I said they generally don't. Again, you're trying to hand-wave away the practical point by theoretically conceding it. "Sure; there's all sorts of stuff that retards the yellowing, but that doesn't mean it yellows less". Errr: Yes, in practical terms it does mean that. It might end up in the same place eventually, but so do all lifeforms; that doesn't mean we have the same lifespan.
And I believed it was abundantly clear that that brief coda was for anyone reading the thread who might be confused by the proliferation of the word 'acrylic'. I never thought that included you but, be my guest; go ahead and score a cheap point with it.
I'm genuinely curious: Which "high-end wood furniture" is using either nitro or acrylic lacquer as the finish?
I have been working on a mute design that needs to mount to the body of a very nice bass which is NEW and finished in lacquer. The mounting surface of the mute is similar in size to a Fender thumb rest.
In reading threads about this subject, two products have been recommended:
1. 3M Scotch 4905 VHB Tape [20 mil / transparent] @ FindTape
2. See photoView attachment 5351831
None of the conversations regarding these products and their merits specifically state that these products were put on lacquer. The heavy duty battle tested commercial acrylics/polyester are a different animal. So before I do something stupid I am looking for a comment from someone who has done this.
I realize that fading differences may occur under this but I would like to be able to remove it and be able to safely clean any residue with either soap and water or naphtha?
All for ebonizing?
(Although: that's a fair point about different eras).
Yeah, but what nitro does IKEA use?
That's a joke, son.