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UV in the Shop #3: Titebond II Fluorescent to the Rescue

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Blog entry by Rich posted 03-03-2018 05:24 AM 606 reads 0 times favorited 3 comments Add to Favorites Watch
« Part 2: Finding Flaws in Finish Part 3 of UV in the Shop series no next part

I’m sure that readers of this blog have thought hey, that’s cool that hide glue fluoresces, but I don’t use hide glue. So what’s in it for me?

Well, who knew that Franklin made a Titebond glue with fluorescent dye added? I sure didn’t. But they do!
It’s Franklin 2316 Titebond Fluorescent Glue.

I’ve read countless articles about glue residue and how to expose it. Conventional wisdom is to dampen it with warm water and the color will change. I’ve used that technique and it works to a degree. I’ve still had occasions where I was fooled and glue residue reared its ugly head.

With this Titebond II glue with fluorescing dye, you can see the glue residue using a $10 UV flashlight.

Here are some images to show its value:

These are a couple of boards glued up with this glue

It looks just like Titebond II. But with a UV flashlight you see this

Here is the backside that was laying on the mat and got glue squeeze-out smeared on it

Looks OK in regular light, but here is the glue residue exposed by the UV light

Honestly, in a typical situation, I’d miss that glue residue. But using Titebond II fluorescent with a UV flashlight exposes it.

-- No matter how much you push the envelope, it'll still be stationery.



3 comments so far

View EarlS's profile

EarlS

919 posts in 2314 days


#1 posted 03-03-2018 11:55 AM

Huh..never would have thought about getting glue that glows in UV. Makes a lot of sense considering the amount of work it takes to sand out a missed glue mark after the first coat of finish goes on.

Might have to look into that when the current glue bottle runs out. I’ll also be looking for a UV flashlight next time I’m on Amazon..

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

View Jbay's profile

Jbay

2231 posts in 866 days


#2 posted 03-03-2018 03:01 PM

Interesting, I’ve never seen that before.
Glue sure does show up good under the light.
Does it make a difference if the glue is wet or dry?

( I’m just trying to figure out how all that Titebond got on my keyboard ) :>/

View Rich's profile (online now)

Rich

2640 posts in 556 days


#3 posted 03-03-2018 03:54 PM


Interesting, I ve never seen that before.
Glue sure does show up good under the light.
Does it make a difference if the glue is wet or dry?

( I m just trying to figure out how all that Titebond got on my keyboard ) :>/

- jbay

Yeah, I’m always getting the pages of my Fine Woodworking magazine stuck together. The last two photos show the backside where it was laying on the mat. That’s completely dried glue and it lights up pretty brightly. The ordinary light shot in the first photo was intended to show that it looks just like Titebond. I honestly can’t recall if the UV photo was taken when the glue was still wet, or after it dried.

But to answer your question, yes it glows brightly even after it dries.

-- No matter how much you push the envelope, it'll still be stationery.

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