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Old 07-01-2006 | 12:28 PM
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RCKen
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From: Lawton, OK
Default RE: Help explain the C A glues

I know that you asked about the differences with CA, but I'm going to throw this in for a bit to think about. I've almost completely quit using CA glues. I do keep thin CA around but the only use I have for that anymore is hardening threads in wood. I will use CA for hinges on planes that I review, but only because that's the way the plane comes. When I build my own planes I use Robart's Hinge Points exclusively.

As for building I use Elmer's Wood Glue. I stopped using CA to build with because I got tired of having my eyes water every time I used it. There is an old wives tale that says that people can develop and "allergy" to CA over time. It's a wives tale because it's not really an allergy, but just a body's reaction to the CA and it's fumes. Everybody has reactions to the CA, some more than others. But EVERYBODY'S reactions will get worse over time the more you use the CA. I've spoken to several doctors about it as well as a couple of chemical engineers here on RCU. Basically here's what happens. CA adhesives are activated by moisture. When the fumes of the CA get into your eyes, nose, and lungs there are chemical reactions taking place because let's face it the insides of our bodies are a bit moist. As I said, some people have mild reactions while others have very severe reactions. Some people are so bad that they have to be taken to the hospital because of it, or have even had breathing problems that last several days after exposure to CA. My reactions were just watery eyes, but I wanted to quit using it before those reactions got worse.

Since I've started building with Elmer's wood glue I enjoy being at the building table a whole lot more now than I did before. And in fact I feel that my building has gotten better since I moved to wood glue. I have more time to ensure that the parts are in place before the glue "kicks". One other thing that I absolutely hated about CA was that wood that thin CA in it was like a rock and was very difficulty to sand. When parts are joined with wood glue the glue sands the same as the surrounding wood.

Anyway, that's a bit of my ramblings about CA. Hope they help

Ken