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General control line discussion => Open Forum => Topic started by: peabody on January 11, 2016, 02:58:47 PM

Title: Laser Bond?
Post by: peabody on January 11, 2016, 02:58:47 PM: I keep seeing ad for Lazer Bond, which appears to be a light hardened glue....has anyone tried it?
It might have some use in our modeling....
Title: Re: Laser Bond?
Post by: Eric Viglione on January 11, 2016, 03:05:28 PM: Ya, I saw the same commercials on TV here. I keep waiting for the law suits to start after seeing them show how they glue back a partial broken blade on that quadcopter.

You would be inclined to think the re-glued blade will either fly off and right into some kids eye, or it'll be out of balance enough to shake it to pieces and send multiple frags or the whole thing into some bystander.

The only people who win will be the lawyers.
EricV
Title: Re: Laser Bond?
Post by: david beazley on January 11, 2016, 06:57:50 PM: The new fillings in my teeth are some kind of light cured glue/stuff. ;D
Title: Re: Laser Bond?
Post by: Avaiojet on January 12, 2016, 08:16:20 AM: Quote from: david beazley on January 11, 2016, 06:57:50 PM
The new fillings in my teeth are some kind of light cured glue/stuff. ;D

David,

My fillings are all white, had the silver removed years ago. All my own teeth too! ;D

Peabody, where would you believe this wood glue could be used?

Charles
Title: Re: Laser Bond?
Post by: Dennis Moritz on January 12, 2016, 08:57:22 AM: Dentists use a light activated glue. Perhaps ultraviolet light activated. Used on me last time I sat in the seat.

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Title: Re: Laser Bond?
Post by: Randy Cuberly on January 12, 2016, 11:43:33 AM: Light activated adhesives have been around since the middle to late 1970's perhaps even earlier than that. The early ones were UV light activated, and proved to be not very long lived. Especially if they were exposed to sunlight for long periods.
Most of the ones around now are very good at quick bonding applications and are very, very strong both in adhesion and strength of material. They are used extensively in dentistry and optics manufacture.
The drawback to the good ones is cost. Typically the ones we used in manufacturing optical instruments cost about $350.00 an ounce. Most are blue light activated. One advantage to them beyond their ease of use and strength is their very long shelf life. Most good adhesives have relatively short shelf life of a few months to a year. The best of the light activated adhesives have shelf lives of up to 10 years.

Randy Cuberly
Title: Re: Laser Bond?
Post by: Tim Wescott on January 12, 2016, 02:10:06 PM: Just store them in the dark...

http://www.masterbond.com/products/led-light-curable-adhesives (http://www.masterbond.com/products/led-light-curable-adhesives)

I think we've had this conversation before.
Title: Re: Laser Bond?
Post by: Tom Niebuhr on January 12, 2016, 03:37:29 PM: A consumer advocate on local TV news in Dallas duplicated the claims shown in the ads. Initially, the bonds worked, but within a few minutes each bond failed. They determined that the claims were a BUST.
Title: Re: Laser Bond?
Post by: Randy Cuberly on January 12, 2016, 05:26:50 PM: Quote from: Tom Niebuhr on January 12, 2016, 03:37:29 PM
A consumer advocate on local TV news in Dallas duplicated the claims shown in the ads. Initially, the bonds worked, but within a few minutes each bond failed. They determined that the claims were a BUST.

I don't know anything about "Laser Bond", but I can guarantee that will not happen with the "good stuff" that I've used on optics. I can also guarantee you won't want to pay for it. Bond joint preparation is very important, actually critical, with these adhesives. Actually it is with most adhesives to achieve maximum strength. They don't like big gaps to cure in!

Randy Cuberly