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LED Coating Solutions
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LED Coating Solutions
Wow! Sorry I missed the live version of this chat. Having used light cured dental materials for years, I can guess the answers to some of your questions. Beware, these are only guesses because the dental materials are similar, but likely a bit different.
First, as far as wearing the orange glasses – it’s a darn good idea. Repeated exposure to a bright light, especially with blue components, will likely promote cataract formation. I do not believe any controlled studies have been done, but why risk it? FWIW, I just had two cataracts removed. Was it due to my years in dentistry? Who knows? It’s fixed.
With the dental materials, the secret to layering is not removing the “air inhibited layer” (a layer of unset material on the surface) on top. And somehow, this stuff doesn’t have that problem. I would be interested to see how that has been handled. The layer was removed with alcohol.
The problem with the dust from grinding these dental materials are the silica particles embedded in them that provide wear resistance. Wear your n95 while sanding and turn on the suction. Simple enough.
My guess is that curing with the big light achieves a couple of things: more cross linking so that (as Ian mentioned), you can walk on it for a hundred years, and depth of cure. Of course sunshine is the low cost option, but I wonder if these are the same wavelengths used in autobody shops? (I know a guy…)
Re: toxicity – the raw material is volatile and likely has toxicity, but once cured, you get the food grade surface. I found that contact with uncured dental material was not a good idea – it’s definitely rash-worthy over time. The raw material is a two part material infused with a light sensitive catalyst. When light of the proper wavelength and strength hits it, the molecule breaks apart and becomes an active catalyst. So the light doesn’t harden the material directly, it activates the catalyst.
I’d love to hear Bryan’s and Dan’s thoughts on mixing colors with these materials. With the dental materials, pigments were suspended in the resin. But the size of the particles must have been fairly large, because when you mixed colors, it was more like a Seurrat painting (pointillism). I remember layering colors to achieve the proper effect.
I hope this helps. I am really looking forward to the next session. This stuff sounds like a real game changer. (This guitar will be tough enough to walk on for 100 years!)
Cheers.
Rick
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BTW – You can garner a lot of information about a product from the Safety Data Sheet (SDS or MSDS) which lists the basic chemical and hazard information about a product. Simply google “product name MSDS (or SDS)” OTOH, after reading theses datasheets you might never want to use any chemicals ever again!
It appears that the “Hardwaxoil Pure,” the acrylic base is “Oxybis diacrylate” and the catalyst is “Diphenyl Phosphine Dioxide.” The two components are dissolved in glycerol.
And once you understand a little bit about the chemistry, you understand the solvents used and the compatibilities. And of course there are always proprietary ingredients (the special sauce) that are hinted at.
The MSDS can be found here MSDS_Clear.pdf
ledcoatingsolutions.com
For 60 Years, Vesting Has Been Developing And Producing High-Quality Wood Treatment Products, Such As Waxes, Oils, Stains, Lacquers, Outdoor And Maintenance Products For Various Markets Such As The Floor And Furniture Industry And The Restoration And Decoration Industry.
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You’d be amazed what you can discover with an MSDS. Here’s an MSDS for the highly dangerous chemical, dihydrogen monoxide:
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You’ve got to watch out for this stuff – it’s probably lurking in your shop. Here’s more information highlighting the dangers of this ubiquitous chemical:
Dihydrogen Monoxide Research Division – dihydrogen monoxide info
dhmo.org
Dihydrogen Monoxide Research Division - dihydrogen monoxide info
Dihydrogen Monoxide resources, information, research and more. Dihydrogen Monoxide is a dangerous chemical. Buy a Ban Dihydrogen Monoxide T-shirt.
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Beware, over ingestion can lead to respiratory failure.
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