Denglas or TruVue question

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Tommy P

Tommy P

MGF, Master Grumble Framer
Joined
Nov 16, 2003
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Mid North Indiana
Getting ready to order some AR glass.
Any thoughts or opinions regarding Denglas Water White AR versus TruVue AR (not museum grade). My cost is slightly less on the TV product and it boasts 78% UV pro with the DG saying only 30%. But is the DG AR the clearest?

Or is shrink wrapping the way to go??? :eek:
 
Do you have samples of each to compare?
The difference in the coating is that TV is sputter coated and has a residual orange peel effect, even though it is very slight. The DG is dip coated.
Low iron glass has some color, waterwhite doesn't.

Is there concern for UV protection? Why not the Museum glass?
 
Wally, I understood the UV coatings to be applied and have the signatures you described, but I didn't understand that the AR was the same. Did I just not understand? And, if I did misunderstand, wouldn't the orange peel be "worse" or "stronger" on Museum? It doesn't seem to be.
 
Good point, all the more reason to have samples in hand since all you are really selling with either product is a look.
Curious to know why the TV A/R has such a higher percentage of UV filtration vs. DG. Does the low iron glass have a naturally higher filtration than water white?

IMHO: I find the finish on the DG to be a little more subtle than the TV finish. It doesn't seem as thick or heavy, though we're talking really thin in either case. This is not to say one is better than the other, just an observation.
 
Wally, I have noticed the "orange peel" effect on TV CC glass. The DG coating sounds as if it would be somewhat superior. Also do I understand that Water White has lower iron than the TV AR product, thus clearer glass and colors of art?

Not really trying to compare these
two products to Museum....just analysing their AR properties in relation to UV % protection.
 
Also I have had a rep tell me that eventually the UV coating on the Truvue will degrade whereas the Denglas claims it lasts "as long as the glass itself".

Is this just.......BS??
shrug.gif
 
Originally posted by Tom Partridge:
Also I have had a rep tell me that eventually the UV coating on the Truvue will degrade whereas the Denglas claims it lasts "as long as the glass itself".

Is this just.......BS??
shrug.gif
Click to expand...
Was it a TruVue rep or a Denglas rep??
 
It was neither.....one of my general suppliers. They handle both products. She was saying this to me and I got the idea she was repeating what she had heard from DG.
 
I heard that from somewhere a while back and asked the TV rep. He basically said it was bunk. Apparently, the UV coating TV uses starts with organic materials and (although my memory is probably foggy on this one!) there is an organic process in the bonding. But, by the time it is "baked" and leaves the factory it is inert and no more subject to degradation than any other inert material.

oh yeah, he did say that none of the UV coatings have been around long enough for "actual" lifetime data, but that tests so far don't indicate the limited life period originally thought. (Of course that begs the question of what is the real life cycle of any of them, but I guess we punt on that one until we know more.)
 
Tom,
My understanding is that waterwhite is iron free, thus no color at all. You still get the green/purple diffraction from the AR coating.
As discussed in another thread, the waterwhite is also softer (again, relative only to glass with iron), and some folks seem a bit hesitant in handling the softer product.
 
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