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Old 12-05-2019, 02:47 PM
Shawn Everette Shawn Everette is offline
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uv delamination

Hey ya'll. So I'm trying to help out my partner on a restoration project at a museum. She's got an assembled cut and polished piece that is starting to get the tell tale delam ferns growing at the seams. There's an odd oil slick look to part of it, which I haven't come across before. We think that it was bonded with a UV, which I know is not our favorite. Anybody have experience on how long to expect complete failure?
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Old 12-05-2019, 03:14 PM
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Pete VanderLaan Pete VanderLaan is offline
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Complete failure? It probably won't but it will continue to look worse and worse. The "artifact" or the fern is the result of inadequate exposure to the UV source. The ring may well indicate how flat the two surfaces were at the time of joining them. Newton rings sugggest very close fits.
During the period when I was trying to use UV before abandoning it was that the light source needs to be warmed up. We finallly kept our light under a cardboard box running all day. If you don't warm them up, the filament develops a coating that interfers with the bonding.

I've taken them apart using Methyl Chloride ( Toxic) but it's a lot faster to bite the bullet and saw them, resurfacing everything and this time doing it in Hxtal.
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Old 12-05-2019, 03:44 PM
Shawn Everette Shawn Everette is offline
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Any chance you could manage to properly cure what hasn't started to come apart. Given the dogma of museum conservation disassembly probably isn't happening, certainly not with a saw.
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Old 12-05-2019, 05:30 PM
Larry Cazes Larry Cazes is offline
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Quote:
Originally Posted by Shawn Everette View Post
Anybody have experience on how long to expect complete failure?
Exactly 1 year 3 months and 10 hours. Thats give or take a few seconds of course.
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Old 12-05-2019, 05:59 PM
Jordan Kube Jordan Kube is offline
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Quote:
Originally Posted by Shawn Everette View Post
Any chance you could manage to properly cure what hasn't started to come apart.
My gut feeling says no but that's the easiest place to start. Won't cost anything. If it doesn't work you're still at present condition.

I know it's not your problem but I would recommend they contact the artist and try to work out a remedy. Museums should have museum quality work, which this piece is not at this point. If the artist isn't interested(I'm assuming they are still around) stick it in a box in back and let it fall apart out of public view.
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Old 12-05-2019, 09:23 PM
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Scott Dunahee Scott Dunahee is offline
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can't you bring it up to temp and burn out the uv glue connections then reassemble after cleaning with hxtal?

Just asking.

BSD
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Old 12-05-2019, 11:23 PM
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Quote:
Originally Posted by Scott Dunahee View Post
can't you bring it up to temp and burn out the uv glue connections then reassemble after cleaning with hxtal?
BSD
This is what the artist should do. If he won't, this is what I would do. I've taken pieces off of bases by bringing them up and down through another annealing cycle. The UV turns dark brown and fails. It isn't easy to get off but a super clean razor blade and some acetone should do the trick. Maybe a cork belt and cerium if it's really stubborn. Then re-assemble with hxtal.
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Old 12-06-2019, 12:23 AM
Steven O'Day Steven O'Day is offline
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Buy a new one?

https://nestcasa.com/product/herkimer-candleholder/
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Old 12-06-2019, 06:47 AM
Monte Becker Monte Becker is offline
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low cost but fail again?

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Originally Posted by Steven O'Day View Post
Shoot - that's a whole lot less expensive then taking it apart and fixing it - and it's 10% off... But, there's no saying it won't fail the same way...
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Old 12-06-2019, 07:38 AM
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It will completely delaminate in an oven at 300F. You just bonk it apart with a mallet. I takes a fair amount if clean up.
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Old 12-06-2019, 08:30 AM
Tom Fuhrman Tom Fuhrman is offline
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I've seen some very early pieces made in the early 70s that were silicone together and were in some prominent museums that were failing. The question then arises, do they get repaired and put back together with the original materials or are they reassembled using newer adhesives. Museum restorations can be a very sticky wicket. One in particular that I recall was a stacked assemblage of mirrored glass balls.
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Old 12-06-2019, 08:54 AM
Shawn Everette Shawn Everette is offline
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So this is the on the money point. I know how to take it apart and reglue it, it's just against nearly all modern conservation protocol to do that. There's a weird dichotomy in their world, one allows full invasive restoration, the other is only preventative maintenance. We're dealing with the latter.

After talking about it they're probably going to just add some hxtal in enough places to keep it together. I believe that this may be one of their "design" pieces, so there is no artist to shove it back on.

Steven's post is by far my favorite.
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Old 12-06-2019, 09:30 AM
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It will only come apart if you put it up over your bed and try to sleep under it.

Don't get me started on the advantages the world would have if it crashed catastrophically to a hard concrete floor. Crocodile tears would fall.
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Old 12-06-2019, 09:52 AM
John Riepma John Riepma is offline
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Or the museum could do what Damien Hirst did when the shark "preserved" in formaldehyde that he sold for $11,000,000 starting rotting in the tank of formaldehyde. I had heard that initially when the collector wanted it conserved he convinced them that the deterioration was part of the process. Eventually the shark was replaced with a "new" (albeit still dead) shark.

https://www.dailyartmagazine.com/sto...n-hirst-shark/

This has always amazed me, the amounts of money that insecure billionaires will spend to have something no one else can have. I just wish I was good enough to make a story like this up.
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Old 12-06-2019, 10:03 AM
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I could send you a dead chicken if you like. Cast in resin?
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Old 12-06-2019, 12:40 PM
John Riepma John Riepma is offline
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I'd prefer an endangered species. More "arty", y'know. Then I'd just have to write some long-winded artist statement and suppress my morals ling enough to put the appropriate number of zeros and commas on the price tag. and probably change my wardrobe to include a beret and ascot and what-all else the successful artists are wearing these days.
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Old 12-06-2019, 02:56 PM
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Just be careful with your use of the negative space..
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Old 12-07-2019, 06:45 AM
Brian Wong Shui Brian Wong Shui is offline
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Wonder what the conservators would do about this?

https://www.cbsnews.com/news/art-bas...ch-2019-12-06/
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Old 12-07-2019, 09:35 AM
Shawn Everette Shawn Everette is offline
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Have a stroke.
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Old 12-08-2019, 05:06 PM
Rick Wilton Rick Wilton is offline
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If it'll fit in a microwave that works well for me taking glass awards apart. The glue gets heated by the microwaves 3 minutes is usually enough.
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Old 12-09-2019, 07:24 PM
Michael Ahlefeldt-Laurvig Michael Ahlefeldt-Laurvig is offline
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Steven,
Did you picture google in some way to find it?
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