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Author Topic: UV Adhesive?  (Read 434 times)
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Starduster
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« on: June 22, 2020, 08:21:04 AM »

Have any of you tried a UV (activated) adhesive?

Sounds almost to good to be true...

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Robmoff
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« Reply #1 on: June 22, 2020, 10:57:02 AM »

Yes. It's pretty good but sets HARD, so if you like CA, you will probably like this. I prefer an aliphatic or straight PVA with a bit of 'give', and sometimes use UHU POR on balsa and foam airframes for the same reason.
Poor points, the battery for the UV LED seems not to last very long, and although the light seems as bright as before, it can than take much longer to cure. It is a thick glue, so probably a bit on the heavy side. You need to be able to shine the LED on the glue line, which rules out some joints.
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lincoln
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« Reply #2 on: June 23, 2020, 06:20:31 AM »

I seem to recall my dentist used UV curing adhesives. I imagine he tried it in his model airplanes also. If you can find a good medium, ask him about it. It might be easier to ask your own dentist, though.
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Olbill
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« Reply #3 on: June 23, 2020, 09:22:54 AM »

I've used it to glue translucent foam flaps on indoor gliders. It works really well for that.
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Pops
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« Reply #4 on: October 21, 2020, 02:17:27 PM »

Robmoff,

Instead of using a dinky little UV LED, why don't take the glued pieces outdoors and let them cure under the sun? It's a free source for UV light and won't go out in a gazillion years. Smiley

And yes, UV cured resin is best suited for open fillings/fillets, or transparent(ish) parts where the UV light can shine through the entire joint. OTOH, further exposure to UV light, as in using the glued item outdoors, WILL make most of these resins brittle and finally break.
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Pops
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TheLurker
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« Reply #5 on: October 21, 2020, 02:39:01 PM »

Quote from: Pops
...why don't take the glued pieces outdoors and let them cure under the sun?
Sun?  On this cloud cloaked, rain soaked little bit of rock?  Hah!  Optimist.  Smiley
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dosco
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« Reply #6 on: November 05, 2020, 07:39:42 AM »

I seem to recall my dentist used UV curing adhesives. I imagine he tried it in his model airplanes also. If you can find a good medium, ask him about it. It might be easier to ask your own dentist, though.

Same here.

I also recall learning - maybe on this formum(?) - about dental cyanoacrylate ... comes in a hypo-looking device with a thumbwheel ...

Dentists. Gotta love em.

-Dave
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