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UV in the Shop

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Blog series by Rich updated 03-03-2018 05:24 AM 3 parts 3521 reads 8 comments total

Part 1: Hide Glue Fluorescence

02-13-2018 05:29 AM by Rich | 2 comments »

An interesting feature of hide glue is that it fluoresces under UV light. Most glues fluoresce to a certain degree, but hide glue really stands out. It’s a great thing to have in your bag of tricks when you’re cleaning off glue from joints, etc. Hide glue washes clean in warm water very easily. Unlike synthetic glues, you can even clean it off long after it’s hardened. One frustrating thing for me has been that its neutral color, a real benefit in woodworking, makes i...

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Part 2: Finding Flaws in Finish

02-16-2018 06:32 PM by Rich | 3 comments »

Another thing that conveniently fluoresces in the shop is finish. Most finishes I’ve tested fluoresce to some extent — some more than others. Shellac, for example, glows a bright orange. Oil based products exhibit different shades of yellow-green, and waterborne products have a slight bluish hue to them. The real significance of the effect is that it varies with the thickness of the finish on the surface. This allows you to quickly locate flaws in the finish very easily. These are...

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Part 3: Titebond II Fluorescent to the Rescue

03-03-2018 05:24 AM by Rich | 3 comments »

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...

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